Wednesday, 10 January 2018

VoLTE VoWiFi Digi Mobil Romania




LISTELE NU MAI SUNT ACTUALIZATE DIN SEPTEMBRIE 2019

Ultimele informatii se afla pe site-ul Digi si pe forumul Softpedia: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__11844


1. Telefoane suportate Oficial de catre Digi Mobil
2. Telefoane nesuportate, pe care totusi merge VoLTE/VoWiFi
2bis. Activare VoLTE pe SIM
3. Proceduri activare VoLTE/VoWiFi si info ptr Samsung, Qualcomm chipsets (+ investigatii cu Network Signal Guru), Mediatek chipsets, iPhone. OnePlus 3/3T/5/5T/6
4. CSC Samsung info; OXM
5. VoLTE pentru toti + carti pentru pasionati
6. Probleme in retea si telefoane
7. Digi.Mobil vs Orange Romania
8. Digi Mobil Phones Screenshots
9. Coduri, aplicatii utile: codecuri, activare volte, mesaje. QXDM, QCAT, QPST.
10. Network Signal Guru
11. De sezon: procedura de activate Digi VoLTE/VoWiFi pentru Samsung S7 - Nougat
12. 3GPP Specifications, GSMA, RFCs, standards
13. Call flows
14. Links
15. Digi.Mobil VoWiFi and Orange.Ro 2G Edge Roaming in the air: Emirates flights and SitaOnAir
16. Vodafone Australia, Optus Australia Network and VoLTE short info
17. VoLTE&VoWiFi Samsung files and settings details, VoLTE/VoWiFi parameters: http://volteromania.blogspot.ro/2018/03/samsung-voltevowifi-settings.html :  CSC, customer.xml, epdg_apns_conf.xml, imsservice.apk, globalsettings.json, imsprofile.json, mnomap.json, imsprofile.xml.
18. Orange Romania 3xCA, 256QAM, MIMO2x2 info
19. Samsung S7 Oreo (G930FXXU2EREM) Digi VoLTE &VoWiFi. Root obligatoriu :) . Hai ca se poate!
20. How to check if VoLTE&VoWiFi are activated in your Samsung firmware. How to open a Samsung firmware and look for CSCs
18.07.2018.  volte22222[at]gmail.com







1. Telefoane VoLTE/VoWiFi suportate oficial:
Telefoane Digi: https://www.digiromania.ro/magazin-online
VoLTE ORO: https://www.orange.ro/tehnologii/apel-4g/
VoWiFi ORO: https://www.orange.ro/tehnologii/apel-wifi/

Dintre care confirmate pe forumul Softpedia:
  1. Samsung S8 (VoLTE&VoWiFiOreo),
  2. Samsung S8+ (VoLTE&VoWiFiOreo),
  3. ZTE A320 (VoLTE),
  4. Allview P9 Life (VoLTE&VoWiFi*),
  5. Allview P7 Lite (VoLTE&VoWiFi),
  6. Allview P4 Pro (VoLTE&VoWiFi*),
  7. Huawei Mate 10 Pro (VoLTE&VoWiFi),
  8. Allview X4 Soul Infinity L (Life), S (Speed), N (Night), Z (Bokeh)  (VoLTE&VoWiFi) 
  9. Allview P7 Pro (VoLTE, VoWiFi) 16.02.2018
  10. AllView P8 eMagic(?) 20.02.2018
  11. Samsung J5 2017 (VoLTE): 10.03.2018, soft: J530FXXU2ARC3, CSC: ROM:  Se da reset din IMSSettings ; Sau reset la factory default, dar e pacat de timp si de date. Alta idee: se baga SIM de la alt operator, de preferat ORO, care are VoLTE deja, dupa care SIMul Digi inapoi, astfel e posibil sa se reinitializeze profilele IMS.
  12.  Allview X4 Soul Infinity Plus (VoLTE&VoWiFi). 20.03.2018
  13. Samsung Galaxy S9+ (VoLTE). 23.03.2018 (S9 too, most likely) 
  14. Samsung A8 A530FXXS2ARC1, CSC: VoLTE only. 23.03.2018 ; A530FXXS2ARE1 02.05 only VoLTE
  15. Samsung J3 2017, VoLTE only, 18.04.2018 
  16. Huawei P20 Pro (cel mai probabil si pe P20),  (VoLTE&VoWiFi), 25.04.2018 
  17. Huawei P20 lite. Tre' facuta sesizare la digi ca nu se activeaza automat.  (VoLTE&VoWiFi), 26.04
  18. Samsung A5 2017, VoLTE, 11.05; SIM activat cu VOLTE in alt tip de tel. compatibil.
  19. Samsung S9, S9 DUOS, VoLTE, VoWiFi, Dual VoLTE/VoWiFi 
  20. Huawei P9 Lite Mini, VoLTE 
  21.  Huawei P Smart, VoLTE/VoWiFi, sim provizionat in alt telefon compatibil
  22. Motorola G6 Play: VoLTE, VoWiFi ?
  23. Samsung S9 + , VoLTE, VoWiFi 
  24. Motorola Moto Z2 Play 
  25. Samsung A6+, Qualcomm, dual sim, VoLTE, VoWiFi
* Problema telefon: VoWiFi nu functioneaza cand telefonul nu are semnal 3G/4G sau cand este pus in mod avion cu WiFi ON




2. Lista de telefoane NESUPORTATE dar pe care merge VoLTE/VoWiFi:

Lista se actualizeaza pe baza confirmarilor de pe threadul softpedia Digi VoLTE.


Intro: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__2556#entry21863961

Telefonul meu nu e suportat, ce fac? Citesc pamfletul. Singura solutie oficiala e sa intrebi sa uiti pe site-ul Digi la telefoane suportate si noutati, ei sunt singurii care iti pot spune cand vor fi suportate telefoanele. Operatorul face primul pas in implementarea VoLTE/VoWiFi pe telefoane. Procedural te adresezi operatorului, tehnic - producatorul de telefoane implementeaza setarile. Operatorul e la mana producatorului.  Telefoane care nu sunt importate oficial in Romania, deci nu au suport de la producator, gen Xiaomi, LeeCo sau ... Samsung DUOS, nu o sa fie niciodata suportate oficial de Digi.

Exemple de telefoane ce au VoLTE activat de producator dar operatorul nu le-a testat, nu sunt pe site-ul operatorului ca suportate:
  • Huawei P9 lite mini, Orange VoLTE
  • Huawei P10 lite oreo, Orange VoLTE, VoWiFi
  • Huawei Mate 10 Lite Digi VoLTE
  • Huawei P10 Plus, Orange VoLTe, VoWiFi
  • Samsung Note 8 Oreo, Digi VoLTE
  • Samsung S8 duo, S8+ duo Digi VoLTE, VoWiFi
  • Samsung A3 2016, Orange VoLTE, VoWiFi
  • Xiaomi diverse Digi, Orange VoLTE
  • Allview diverse, Orange VoLTE, VoWiFi 

2bis. Activare VoLTE pe SIM
 
In viitor sunt vor aparea si solutii standardizate de GSMA: operatorul pune setarile VoLTE pe un server de pe net care are o baza de date, cand bagi SIMul in telefon, isi face download la setari automat .... vezi si aici: Setari VoLTE/VoWiFi



***** Inainte de a incerca trebuie sa aveti SIM cu profil VoLTE confirmat in contul Digi: https://www.digiromania.ro/auth/login (fostul Digicare) (screenshot mai jos). Daca arate VoLTE in contul Digi ... si VoWiFi e activat automat pe SIM. 

Ptr a activa VoLTE pe un SIM, bagati SIMul intr-un telefon suportat oficial si asteptati (10 min - 72 ore) pana apare VoLTE in profil, eventual dupa 12 ore sunati la Digi Relatii cu clientii sa va activeze manual VoLTE pe SIM. Activarea se face in functie de IMEIul telefonului, nu are treaba cu tipul de soft care e instalat.

Daca folosesti Samsung S8/S8+, S9 ...  ptr activarea VoLTE pe SIM, sfatul e sa deschizi aplicatia Digi ce apare cand bagati SIMul in telefon:  Setari Digi (sau SIM Tool Kit ) /Change IMSI : Roaming dupa care inapoi in National. In felul asta telefonul isi trimite din nou IMEIul&IMSIul si sunt sanse mult mai mari sa se updateze bazele de date Digi; astfel activarea VoLTE se poate face mai rapid, chiar in cateva minute. SIMurile Digi au 2 IMSIuri, unul de Romania, altul de Italia, doar unul e activ la un moment dat, se schimba din aplicatie; cand se schimba IMSIul (codul cartelei) , telefonului i se cere sa trimita si IMEIul (codul telefonului).

Daca se foloseste AllView, se pare ca la alea e ma basic procedura, se activeaza VoLTE mult mai repede.

 Pasul doi este activarea in meniul/softul telefonului, vezi mai jos. *****
Telefoanele de mai jos, nefiind testate si aprobate oficial de catre Digi, pot avea diferite probleme.


Nou: https://www.digiromania.ro/auth/login




VoLTE:
  1. Xiaomi Mi6: Qualcomm: stock. Cu asta sunt ceva sanse sa se activeze direct VoLTE pe SIM in Digicare ptr ca Mi6 a fost telefon de test ptr Digi si ptr comunitatea softpedia. Totusi, unora li s-a activat automat, altora nu ... In rest ramane telefon nesuportat.
  2. Samsung S8+ DUOS: ultimul soft ROM, *CSC ROM*
  3. Samsung S6: root, ultimul 7 Android Nougat CSC ROM si profile RDS in IMSSettings. 28.10.2017 ; /data/user_de/0/com.sec.imsservice/shared_prefs/imsprofile.xml
  4. Samsung S8: root, ultimul CSC ROM, soft precedent 1AQH3, kernel modificat
  5. Samsung A5 2016: root, CSC, xml; ROM custom
  6. Samsung S6 Edge: root, CSC ORO updated, xml
  7. Samsung S7: root, CSC, xml ; (S7 Edge qcom -incomplet: codecuri gresite)
  8. Samsung S8 DUOS: ultimul soft ROM, *CSC ROM*
  9. Xiaomi Mi Mix2: Qualcomm: MIUI stock
  10. Huawei P10 plus: stock, TIM ROM
  11. LeEco Le S3 3GB: chipset MediaTek: stock; APK: MTK Engineering
  12. Xiaomi Redmi Pro MTK Helio X20; stock; APK: MTK Engineering
  13. Xiaomi Redmi Note 4 MTK; APK: MTK Engineering
  14. Samsung A5 2017: root, CSC, xml
  15. Xiaomi Redmi 5: stock 
  16. Samsung S5, Android 6.0.1 Marshmallow, root, CSC VD2, schimbari in CSC&IMSSettings 
  17. Samsung S4, Android 5.0.1 Lollipop, root, CSC PHN, schimbari in CSC&IMSSettings  
  18. Samsung  A5 2016 A510FXXU5CRA3 root CSC ROM , xml , apk
  19. Samsung S6 Edge, latest firmware ROM, root, CSC, using S6 apk&xml files
  20. Xiaomi Redmi 4A, MIUI 9.2.6, activation with *#*#86583#*#* + APN ims configuration
  21. Samsung S7 Edge Duos, G935FD,  G935FXXS2DRAA, use the procedure found on this blog (05.03)
  22. Xiaomi Mi A1, Qualcomm, Oreo: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__6840#entry22615144 ; 1 min delay for Mobile;     UPDATE:merge direct:  https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__8010#entry23180527
  23.  Originating SMS (08.03)
  24. Samsung J5 2016, Qualcomm, root, xml, CSC ROM (14.03), procedura VoLTE , ptr VoWiFi astept PM :)
  25. Samsung Note 8: Oreo (18.03)
  26. Xiaomi Redmi 5 Plus, MSM8953 Snapdragon 625, MIUI 9.2.6/Android 7.1.2 Nougat. (18.03)
  27. Xiaomi Mi Mix 2, Oreo, *#*#86583#*#*. 25.03.
  28. Leeco X626. MM. (28.03). Leeco X622
  29. Samsung A3 2016, A310FXXU4CRB1, CSC PHN, edit CSC, imsprofile.xml (16.04) 
  30. Allview V3 Viper, stock, Oreo (18.04)
  31.  Xiaomi Redmi Note 5, (19.05)
  32. Huawei P10 , stock, (23.05)
  33. Samsung A3 2015, root... 
  34. Samsung A3 2017, stock 
  35.  Xiaomi Mi Mix 2s, stock
  36. Samsung S7 Oreo (G930FXXU2EREM), VoLTE&VoWiFi, root, CSC
  37. OnePlus 5:  VoLTE, VoWiFi  
  38. Oneplus 3: VoLTE  
  39. OnePlus 6: VoWiFi in roaming     and VoLTE, dual VoLTE
  40. Xiaomi Redmi Note 4x, QPST, ... Tutorial aici
  41. Xiaomi Redmi 4 Prime, QPST   
  42. Orice Samsung cu root ce suporta VoLTE.

VoWiFi:  Lansarea oficiala VoWiFi se lasa asteptata. Daca aveti VoLTE in Digicare, automat aveti si acces la VoWiFi
  1. Samsung S8; S8 DUOS; S8+; S8+ DUOS: Android 8, beta Oreo
  2. Samsung S6: root, xml, db
  3. Samsung A5 2016: root, xml, apk sau ROM custom
  4. Samsung S6 Edge: root, xml, apk; (S7 Edge qcom -incomplet: codecuri gresite, deconectari ...)
  5. Samsung S8; S8 DUOS; S8+; S8+ DUOS: root, Nougat
  6. Samsung S7: root, xml, apk
  7. Samsung A5 2017: root, CSC, xml
  8. Samsung  A5 2016 A510FXXU5CRA3 root CSC ROM , xml , apk
  9. Samsung S6 Edge, latest firmware ROM, root, CSC, using S6 apk&xml files
  10. Samsung S7 Edge Duos, G935FD, G935FXXS2DRAA,  use the procedure found on this blog (05.03)
  11. Samsung A3 2016, root, CSC, xml, ..., . 20.05 
  12. Samsung S7 Oreo, root, CSC 
  13.  orice Samsung cu root ce suporta VoLTE/VoWiFi.





3. Proceduri activare VOLTE pe telefoane nesuportate:

  • Samsung EXYNOS & QUALCOMM chipsets:
VoLTE&VoWiFi, linkul cu ultima versiune a fisierelor: https://www.dropbox.com/sh/dtyx7c71rbp4f7y/AAB06JQYgbAyHHWoAhFG3jCMa?dl=0

http://volteromania.blogspot.com.au/2018/03/samsung-voltevowifi-settings.html :  csc, customer.xml, epdg_apns_conf.xml, imsservice.apk, globalsettings.json, imsprofile.json, mnomap.json, imsprofile.xml.
  • QUALCOMM chipset:
  https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__8172#entry23246663


Pasionatii cu qualcomm sa incerce procedura de pe XDA:  https://forum.xda-developers.com/oneplus-3/how-to/how-to-getting-vowifi-volte-poland-t3595940/


Telefoane cu chipset Qualcomm si root, investigatii cu Network Signal Guru:

In prima faza cititi despre conectivitatea IP a unui telefon DIGI VoLTE/VoWiFi : https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__5508#entry22202836
  1.  VoLTE configurat pe SIM si confirmat in Digicare
  2. Configuram manual APNul ims: nume ims, tip: ims, ipv4. Restart telefon. Nu ne speriem daca nu e vizibil, a fost bagat in baza de date a telefonului oricum. La Orange se pune ipv4ipv6 sau ipv6.
  3. Deschideti NSGuru cu Datele mobile sau WiFi ON ca sa isi verifice configuratia. Mergem la fereastra Signaling, de la triunghiul din dreapta sus selectam doar NAS si IMS.
  4. Exit din NSGuru, ca sa o ia curat la urmatoarea lansare.
  5. Telefonul cu Flight mode ON
  6. Deschideti NSGuru
  7. Flightmode OFF
  8. Asteptam sa intre 4G, si sa apara minunea, iconita VoLTE. De nu apare in 3 secunde apasam pe lacatel si ne uitam la mesaje in NSGuru. Acum facem screenshoturi la EUTRA Sessions si Signalling.
EUTRA Sessions: daca apare APN ims & QCI5 inseamna ca avem VoLTE in profilul SIMului din "centrala"(HSS) Operatorului (in cazul Digi apare si in Digicare). Daca apare si un IP la Used CSCF inseamna ca avem comunicare cu IMSul, cel mai probabil si VoLTE. CSCFul e serverul SIP cu care vorbeste telefonul pentru a se inregistra in sistemul IMS si a avea acess la VoLTE.

Signalling: Trebuie sa avem, dupa Attach Complete, un PDN Connectivity Request. Daca nu apare, telefonul nu are activat VoLTE corect, adicalea nu vrea sa se conecteze la APNul ims. Daca apare, mergem mai departe si vedem ca la al doilea mesaj sa avem .... Context Accept, adica telefonul sa accepte IPv4 oferit de retea. Multe telefoane chinezesti cu Qualcomm dau Reject aici, daca apare Reject e nasol, n0a trecut nimeni peste faza asta. Screenshot comparativ mai jos. Daca avem Accept, mergem mai departe.

Signalling:  SIP: comunicarea cu IMSul Digi, deobicei toate cele 8 mesaje vin la pachet si in final apare iconita de VoLTE (sau HD.)


Cel mai greu e sa facem telefonul sa se conecteze la APNul IMS automat si sa accepte IPv4. Daca nu reuseste sa faca asta, insistam  :) cu alte idei. 





Reject vs Accept de IPv4:



  •  MEDIATEK chipset:
Telefoanele cu MediaTek: APK: MTK Engineering, ptr VoLTE se alege VoLTE_Operator_Ericsson.
VoWiFi nu a activat nimeni pana in prezent.
  • iPhone:
Poate doar jailebreaked, cu Carrier Hacks - se pare ca s-a facut asta pe la altii. Oricum oficial VoLTE pe iPhone nu o sa avem curand; un motiv e cel tehnic, reteaua nu e deajuns de matura inca, are multe probleme iar Apple lanseaza doar cand VoLTE merge bine deja. Daca va veni timpul, Digi va trece prin testele de certificare Apple , dupa ce reteaua devine certificata si dpdv VoLTE/VoWiFi, deobicei Apple trimite o actualizare catre toate telefoanele mai noi de iPhone5 si isi actualizeaza site-ul cu operatorii suportati pe VoLTE/VoWiFi.

4 .Samsung S8 Nougat CSC ROM  Digi.Mobil & more
http://volteromania.blogspot.com.au/2018/03/samsung-voltevowifi-settings.html :  csc, customer.xml, epdg_apns_conf.xml, imsservice.apk, globalsettings.json, imsprofile.json, mnomap.json, imsprofile.xml.

<Setting>
        <NetworkName>Digi.Mobil</NetworkName>
        <EnableIMS>true</EnableIMS>                         IMS: ON
        <VoLTE>
          <EnableVoLTE>true</EnableVoLTE>                   VoLTE: ON
          <EnableVoiceoverWIFI>false</EnableVoiceoverWIFI>  VoWiFi: OFF
          <EnableVideocall>false</EnableVideocall>        VideoCall: OFF
          <EnableVoLTEindicator>true</EnableVoLTEindicator>   Iconita VoLTE: ON
          <Voice_Domain_Preference_EUTRAN>imspsvoicepreferred</...>    VoLTE preferat
          <Emregencycall_Domain>cs</Emregencycall_Domain>         Apel la 112: CSFB, apelul se face in 3G, nu VoLTE
          <SS_Domain_Preference>cs_always</SS_Domain_Preference>  Configurarea Serviciilor Suplimentare gen call fwd: CSFB, se face doar din 3G, nu e implementat peste IP ptr 4G
          <SS_CSFBwithIMSerror>false</SS_CSFBwithIMSerror>    NA
          <USSD_Domain_Preference>cs</USSD_Domain_Preference>     Codurile USSD: configurarea cu CSFB, se face doar din 3G, nu e implementata peste IP ptr 4G
          <EnableSMSoverIP>false</EnableSMSoverIP>                       SMS over IP: OFF; se face prin semnalizarea 4G
        </VoLTE>
      </Setting>
    
    
    
    
      <Profile>
        <NetworkName>Digi.Mobil</NetworkName>
        <IpVersion>ipv4</IpVersion>
        <Editable>no</Editable>
        <ProfileName>IMS</ProfileName>
        <Auth>none</Auth>
        <Protocol>http</Protocol>
        <MTUSize>1500</MTUSize>
        <PSparam>
          <APN>ims</APN>
        </PSparam>
      </Profile>
    
    
epdg_apns_conf.xml :

  <vowifisettings>
        <!-- wifi_call_enable 0 = off, 1 = on -->
        <!-- wifi_call_preferred 1 = wifi pref, 2 = cs pref, 3 = wifi only, 4 = cs only -->
        <!-- wifi_call_when_roaming -1 = not used, 0 = cs pref, 1 = wifi pref -->

    <!-- RDS Romania ROM -->
   <vowifi operatornumeric="22605"
            wifi_call_enable="0"
            wifi_call_preferred="1"
            wifi_call_when_roaming="-1"   ****** NOT USED YET!
   />

Samsung firmware name convention:

G950FXXU1CRAP - Oreo for Samsung S8
  • G950F - model
  • XX - Europe
  • U - user- firmware comercial; E- engineering/developer
  • 1 -  bootloader version
  • Z/C - I don't know
  • R - anul- 18 2018;
  • A - luna- 1- January
  • P - revision
Samsung CSC list: https://www.androidsage.com/2017/07/12/list-of-samsung-galaxy-country-specific-product-code-csc-and-country-region/

Samsung OXM Multi-CSC: ACR AFG AFR ARO ATO AUT BGL BNG BRI BTC BTU CAC CAM CHO COO DBT DKR ECT EGY EON ETL EUR GLB ILO INS ITV KSA LAO LUX LYS MID MM1 MWD MYM NEE NPL ORX PAK PHE PHN ROM SEB SEE SEK SER SIN SKZ SLK SMA STH THL THR TMC TPA TPH TTT TUN TUR WTL XEF XEH XEO XEU XFE XME XSG XSP XTC XXV ZTO ;

 ROM: Romania (Orange RO, Vodafone RO, Cosmote, Digi Mobil)

 More info:  https://docs.google.com/document/d/1qcoZz0YBh4I_A7Im1vJAtYzZPyZy9goXvcB9jixgKXM/edit

Samsung S8 CSC/ Samsung S9 CSC:

Look under : / Settings/ About Phone/  Software Information: Service provider SW. ver.




The CSC Version under Service Provider Software in Software Information in Setttings says.

AAA/BBB/CCC

where
AAA is the current CSC
BBB is the recommed CSC for your SIM (if this CSC is inside your current Multi-CSC)

CCC is the factory CSC of your phone and can´t be changed

No way as the 3rd field is stored into NV file backup, which is located into efs root folder.
Basically it's just a reminder of the original csc, the only way to change it is to root the phone and edit NV backup.



5. VoLTE pentru toti:

  1. Cat e de util VoLTE in prima faza: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__4950#entry22093271
  2. Handoverul de la 4G la 3G adica SRVCC: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__5238#entry22146827
  3. Conectivitatea IP a unui telefon DIGI VoLTE/VoWiFi: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__5508#entry22202836
  4. Proceduri de baza in VoLTE: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__5364#entry22167260
  5. IMEI vs IMSI: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__4770#entry22064543
  6. call drop 15 min: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__4878#entry22084252
  7. codecuri: https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__4968#entry22095814
  8. localizare cu VoWiFi : https://forum.softpedia.com/topic/1092122-digi-mobil-apel-4g-prin-tehnologia-volte/page__st__5778#entry22252762

Carti telecom:


6. Probleme in retea si telefoane, gasite de userii de pe softpedia:

New:
  1. VoWiFi nu se conecteaza automat cand se vine din zona cu 4G/VoLTE; trebuie dat disable/enable la VoWiFi is in final o ia. VoWiFi nu merge din mod avion cu WiFi on, nici din 2G only, nici din 3G only, nici daca e telefonul pus pe automat si e semnal doar 3G. - > E busit profilul de VoWiFi, Digi stie de problema. Faci sesizare, le zici ca e problema cunoscuta, te rezolva in cateva minute, trebuie sa dai un restart la telefon.

Old:
  1. VoLTE/VoWiFi apeluri catre numere portate: cateodata fara audio in ambele directii (lipsa audio 5-6 secunde sau mult mai mult timp), cateodata pica apelul cand apelatul raspunde. 
  2. Conf call: cateodata nu e notificat initiatorul ca ceilalti au parasit conferinta.
  3. Apeluri catre numere din exterior: cateodata HD cateodata non-HD; trebuie sa fie non-HD.
  4. ZTE A320 : ii pica apelul primit dupa 15 minute
  5. Allview P7 lite nu poate initia conf call.
  6. Allview P4 Pro nu face CSFB la 3G cand sa schimbe serviciile suplimentare gen call forward
  7. Allview P4 Pro, P7 Lite, P9 Life nu activeaza VoWiFi cand nu are semnal 3G/LTE (screenshot mai jos). Nu se conecteaza la VoWiFi nici cand e in flight mode cu WiFi ON. Daca e conectat la VoWiFi sipierde semnalul 3G/4G intre timp, nu poate efectual apeluri insa poate primi apeluri.
  8. Samsung S8/ S8 DUOS in cazul apelurilor catre numere portate, tel. arata callul ca e HD cand este defapt non-HD (screenshot mai jos);
  9. Huawei Mate 10 Pro se reseteaza cateodata cand are VoWiFi activat. (?)@P!-
  10. Huawei Mate 10 Pro: in flight mode ii pica conexiunea VoWiFi cateodata Doar cand AP e un telefon mobil (Samsung S7). Irelevant.
  11. Huawei Mate 10 Pro: VoLTE/VoWiFi cand initiaza apel, cateodata, nu se aude ca suna telefonul apelatului cand acesta are nr. portat. Dupa ce persoana apelata raspunde, apelul decurge normal. @P! Rezolvat din reteaua Digi: in SIP Ringing: P-Early-Media: inactive.
  12. Allview P4 Pro & P7 Lite:  la fel ca la 11). VoLTE/VoWiFi cand initiaza apel, nu se aude ca suna telefonul apelatului cand acesta are nr. portat. Dupa ce persoana apelata raspunde, apelul decurge normal.  Problema e in Allview, confirmat de Digi, va fi rezolvata de Allview..Rezolvat din reteaua Dig: in SIP Ringing: P-Early-Media: inactive. Early media info.
  13. Huawei Mate 10 Pro: Cu flight mode ON, cu dual VoWiFi, merge VoWiFi doar pe simul pe care au fost setate datele mobile;   Daca flight mode e OFF, merge VoWiFi de pe ambele SIMuri. Incert
    14.  
     
     



7. Digi vs Orange:

  • Icons:


  • caracteristici retea Digi versus Orange

Digi RO Orange RO
1 . MCC MNC 226 05 226 10
2 . LTE bands B1 (2100MHz - 5-10 MHz), B38 (TDD, 2600MHz - 20MHz ) B3(1800MHz - 20MHz), B7 (2600MHz - 20MHz), B20 (800MHz - 10MHz)
3 . Carrier Agregation  Testing E/// 2xCA  B38(15MHz)+B38(10MHz) 3xCA, max 375Mbps
4 . Internet APN internet ; abo: 200Mbps/50Mbps, QCI 9 net; abo: 450Mbs/150Mbps
5 . Internet IP IPv4, private IPv4, private
6 . VoLTE APN ims ims
7 . VoLTE IP IPv4 only, WTF IPv4IPv6
8 . VoLTE APN Qos 512/512kbps 128/128kbps
9 . VoLTE APN allowed in 3G YES YES
10 . Operator IP range IPv4, private, 10.15.x.x, 10.16.x.x 2a02:a58:8000::/36
11 . VoLTE codecs AMR-WB, AMR-NB AMR-NB, AMR-WB
12 . 3G Voice HD NO - only AMR-NB 12.2 YES - AMR-WB 12.65
13 . RCS NO yes, with SMS Fallback, google solution
14 . RCS APN NO net
15 . RCS Servers NA config.rcs.mnc010.mcc226.pub.3gppnetwork.org **data**
rcs-ora-production-sip.ora.jibecloud.net
_sip._udp.rcs-ora-production-sip.ora.jibecloud.net
rcs-ora-production-sip.ora.jibecloud.net   **data**
_sips._tcp.rcs-ora-production-sip.ora.jibecloud.net
_sip._tcp.rcs-ora-production-sip.ora.jibecloud.net
ftcontentserver.rcs.mnc010.mcc226.pub.3gppnetwork.org after **data** reboot
16 . Speedtest during VoLTE Call OK OK
17 . Ut interface APN - supl services change NO, falback to 3G, HOS APN(xcap + RCS) in Allview NO, fallback to 2G/3G
18 . VoWiFi YES, nelansat YES
19 . VoWiFi in Roaming YES* NO
20 . VoWiFi in Roaming over VPN YES YES*
21 . Handover from LTE to WiFi YES YES
22 . Handover from WiFi to LTE YES YES
23 . Video Over LTE NO NO
24 . Sigcomp (SIP Message Compression) NO NO
25 . SMS Over IP (IMS) (MO, MT) NO NO, planning
........................................................................................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................................................................................

27 . VoLTE Prepaid NO YES
28 . Radio 4G Huawei B1 + B38 ;  ZTE B38; E/// B38 in viitor Huawei
29 . Radio 3G Nokia, Huawei; E/// in viitor Huawei
30 . Radio 2G NA Huawei
31 . IMS Huawei Nokia
32 . EPC Huawei Ericsson
33 . MSC Nokia Ericsson
34 . HSS Nokia ZTE
35 . P-CSCF IPs (SIP Server) 10.13.110.125, 10.13.110.135 2a02:a58:8100::8, 2a02:a58:8100:1000::8
36 . P-CSCF IPs  pingable NO blocked by Samsung in latest SW(?)
37 . IMS geo redundancy sites ?, ? Bucuresti, Cluj
38 . ePDG IPs (VoWiFi VPN Server) 82.137.15.212,  82.137.11.252 109.166.155.233, 109.166.155.232
39 . ePDG IPs pingable NO. 04.04.2018 YES
40 . ePDG FQDN epdg.epc.mnc005.mcc226.pub.3gppnetwork.org epdg.epc.mnc010.mcc226.pub.3gppnetwork.org
41 . VoLTE SIP Preconditions Partial color, OK for digi numbers, NOK for BIn&BOut YES
42 . DTMF support YES YES
43 . SRVCC to 3G YES YES
44 . SRVCC to 2G NA NO, hm
45 . a SRVCC (handover to 3G during alerting ph) YES partial color, of of
46 . b SRVCC plm plt
47 . mid call SRVCC YES NO, uh
48 . VoLTE - VoLTE call codec: AMR-WB 23.85kbps, bearer: 44kbps codec: AMR-WB 23.85kbps, bearer: 51kbps
49 . VoLTE - fix call VoLTE AMR-NB 12.2
50 . VoLTE - * call VoLTE AMR-NB 12.2,29kbps, *22622 CSFB to 3G
51 . MMI over IMS or CSFB (SS) fallback to 3G/  ##002# 
52 . USSD over IMS or CSFB fallback to 3G / *111#
53 . VoLTE - 112 call over VoLTE or CSFB fallback to 3G CSFB to 3G ?
54 . VoLTE - 0800 call VoLTE AMR-NB 12.2, 29kbps, 0800801227
55 . VoLTE - *777 VoLTE AMR-NB 12.2, 29kbps
56
VoLTE to same operator 3G AMR-NB, AMR-NB not supported by Digi in 3G AMR-WB 12.65, when supported by B party
57 . VoLTE - international VoLTE AMR-NB 12.2
58 . VoLTE to Voicemail Digi doesn't provide VM
59 . Digi VoLTE to ORO VoLTE VoLTE AMR-NB 12.2
60 . ORO VoLTE to Digi VoLTE VoLTE AMR-NB 12.2, no precond
61 . Digi VoLTE to ORO VoLTE ported from VDF VoLTE AMR-NB 12.2, Samsung bug displays: HD
62 . Long duration calll OK, 40 min OK, 40 min
63 . Call hold/ unhold OK, when B party puts on hold Samsung display H/R YES
64 . Call Hold anunt OK,  ...2 beeps ...
65 . Conf Call OK, AMR-WB YES
66 . Conf Call URI sip:mmtel@conf-factory.ims.mnc005.mcc226.3gppnetwork.org sip:mmtel@conf-factory.ims.mnc010.mcc226.3gppnetwork.org
67 . Call Waiting OK
68 . Call to incorrect number VoLTE AMR-WB 23.85 / call: 12345 ; 44kbps
69 . VoLTE sub is in 3G, mobile terminating call OK - fast OK
70 . Call Forward Unconditional

71 . Call Forward when Busy plm
72 . Call Forward Not Answering

73 . Call Forward Not Reachable at all

74 . CallForward Not Registered in SIP

75 . SIP Deregistration OK OK
76 . SIP transport UDP, TCP UDP, TCP
77 . Re registration timer 1800 sec, SIP REG  every 1200 sec 3600 sec, SIP REG every 3000 sec
78 . Refresh method : Invite/ Update SIP Update/ 15 mins SIP Invite
79 . Codec adaptation NO NO
80 . IMS for FIX Line Subscribers NO YES
81 . Handover from 3G to 4G in connected mode NO YES
82 . VoLTE IPSEC depends on the UE: Samsung no ipsec: PRAF, Allview Ipsec+ciphering YES, no ciphering on Samsung

8. Digi Mobil Phones Screenshots

  • Samsung S6 Nougat VoLTE


  • Samsung S6 Nougat VoWiFi


  • Xiaomi Mi6 VoLTE


  • Samsung S8 Nougat VoWiFi

  • Allview P7 Lite VoLTE&VoWiFi

  • Samsung S6 VoWiFi in roaming, UK 





9. Usefull applications for network monitoring:

  • Samsung
*#0011# during the call - codec type, Carrier Aggregation info, radio details
APK: QuickShortcutMaker: IMSSettings: VoLTE settings +export of all IP messajes including VoLTE/VoWiFi SIP ones in pcap format.
APK: QuickShortcutMaker: EpdgTestApp: info VoWiFi, VoWiFi settings

Samsung Oreo: IMSSettings  can be launched only if the phone is rooted. there are 3 ways:
  • Quickshortcutmaster
  • Shortcut Maker
  • adb:
adb shell
su -
am start -n com.samsung.advp.imssettings/.ImsSettingsLauncherActivity IMSSettings

or

am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://467

  • Xiaomi (root), other phones with Qualcomm chipset
Code for VoLTE activation *#*#86583#*#* , see official Xiaomi statement.
Network Signal Guru: display codec type, radio CQI, modulation, RRN, NAS messages, VoLTE/SIP messages, VoWiFi messages.  The best application for network monitoring!

  • Allview, other phones with Mediatek chipset
APK: MTK Engineering: VoLTE settings +export of all IP messajes including VoLTE/VoWiFi SIP ones in pcap format.


10. Network Signal Guru

  • Cele mai multe cu Qualcomm Refuza IPv4 oferit de retea ptr APN-ul ims, Mi6 e OK

  •  Mi6 apel HD





11.De sezon VoLTE&VoWiFi Digi pentru:
Samsung S7 G930FXXU1DQJ3, G930FXXS2DRAA, G930FXXS2DRC3 root, CSC ROM, VoLTE&VoWiFi
Samsung S6, G920FXXU5EQH6&G920FXXU5EQK8 root CSC ROM VoLTE&VoWiFi ;
Samsung  A5 2016 A510FXXU5CRA3 root CSC ROM VoLTE&VoWiFi



 
Fisierele sunt la: https://www.dropbox.com/sh/dtyx7c71rbp4f7y/AAB06JQYgbAyHHWoAhFG3jCMa?dl=0

Fisiere ce au fost modificate: http://volteromania.blogspot.com.au/2018/03/samsung-voltevowifi-settings.html :  csc, customer.xml, epdg_apns_conf.xml, imsservice.apk, globalsettings.json, imsprofile.json, mnomap.json, imsprofile.xml.

Samsung S7 G930FXXU1DQJ3, G930FXXS2DRAA root, CSC ROM, VoLTE&VoWiFi
Merge si pe Samsung S7 Edge Duos, G935FD,  G935FXXS2DRAA, CSC ROM, cu aceleasi fisiere.
Procedura se poate testa si pe alte versiuni de soft din cadrul aceluiasi Android dar cu prudenta maxima; daca softurile noi aduc doar mici update uri de securitate in principiu merge.
G930FXXS2DRC3, ultimul soft ROM:  nu apare switch ul volte dupa procedura volte, apare dupa ce se face procedura completa de mai jos. Incercati fara frica.

Preconditii:
1. Samsung S7 (mari sanse sa mearga si pe S7 DUOS) G930FXXU1DQJ3/G930FROM1DQJ3/G930FXXU1DQIL/G930FXXU1DQJ3, CSC ROM, root, twrp, backup, verificat ca merge restore cu twrp.
2. Procedura cu VoLTE facuta deja, asta ptr a dovedi vointa, VoLTE functional pe telefon. Daca asta nu merge, nu treceti mai departe ca se incurca itele.

 Se salveaza pe PC fisierele : 

- epdg_apns_conf.xml din directorul /etc
- imsservice.apk din /system/priv-app/imsservice/
- toate fisierele din  /data/user_de/0/com.sec.imsservice/shared_prefs/



 Daca nu le indepliniti, nu va aruncati mai departe ca va f*teti telefoanele. Oricum sunt sanse sa se blocheze telefonul deci cateva restore-uri/reinstalari sunt foarte probabile.

 Partea 1: CSC
Editeaza customer.xml care il gasesti in /CSC si sub CSC/ROM ; editeaza-le pe ambele, ele se cam sincronizeaza. Pot fi sub /OMC in S7. Daca-s editate deja, sari peste.
Pui true acolo la VoWiFi, dai restart la telefon, verifica daca iti apare , in meniu : WiFi Calling. Daca nu apare, te opresti si mai vorbim. Foloseste ES FILE Manager EDITOR ptr a edita fisierele ; trebuie sa ii dai permisiuni de root din meniu.

 <Setting>
<NetworkName>Digi.Mobil</NetworkName> <<<<<<<<<<<
<EnableIMS>true</EnableIMS>
<VoLTE>
  <EnableVoLTE>true</EnableVoLTE>
  <EnableVoiceoverWIFI>false</EnableVoiceoverWIFI> <<<<<<<<<<<
  <EnableVideocall>false</EnableVideocall>
  <EnableVoLTEindicator>true</EnableVoLTEindicator>
  <Voice_Domain_Preference_EUTRAN>imspsvoicepreferred</Voice_Domain_Preference_EUTRAN>
  <Emregencycall_Domain>cs</Emregencycall_Domain>
  <SS_Domain_Preference>cs_always</SS_Domain_Preference>
  <SS_CSFBwithIMSerror>false</SS_CSFBwithIMSerror>
  <USSD_Domain_Preference>cs</USSD_Domain_Preference>
  <EnableSMSoverIP>false</EnableSMSoverIP>
</VoLTE>
  </Setting>
</IMSSetting>

 La APNuri , in meniu , selecteaza APNul internet sa fie default. Verifica ca iti mai merge VoLTE. Daca nu merge te opresti si imi spui.

 Partea 2: XML si APK
Aici partea grea e la editarea celor 2 fisiere, mai ales imsservice.apk, pentru S7 se dau mura-n gura. (Care e smecheria: fisieul xml se adapteaza de la un S8 la telefonul nostru - 3 profile de editat cu atentie maxima, fisierul .apk se desface cu winrar, se extrag fisierele json, se editeaza asftel incat sa ia cat mai multa informatie de la S8, ceva voodoo, se baga inapoi in apk)
Fisierele luate de pe dropbox le pui cu atentie si urmaresti pasii de mai jos, nu sari niciunul, nu dai restart intre ei
0. inainte sa le rescrii, salveaza-le sub alt nume pe telefon eventual si pe PC, cine stie la ce o sa fie bune.
1. copiezi epdg_apns_conf.xml in directorul /etc ii dai permisiuni rw- r-- r-- ; adica ce avea inainte.
2. copiezi fisierul imsservice.apk in /system/priv-app/imsservice/ ii dai permisiuni rw- r-- r-- ; adica ce avea inainte. VxOxLxTxExD1G1 
3. stergi toate fisierele de sub:
/data/user_de/0/com.sec.epdg/databases/ si
/data/user_de/0/com.sec.imsservice/shared_prefs/
4. dai restart la telefon, activezi VoLTE/ VoWiFi, vezi daca merge. Daca se blocheaza faci restore cu TWRP dar inainte de restore imi trimiti (daca mai poti sa le iei cumva) iwlansettings.db de sub /data/user_de/0/com.sec.epdg/databases/ , globalsettings.xml & imsprofile.xml de sub /data/user_de/0/com.sec.imsservice/shared_prefs/.


De nu merge :

 Trimite-mi toate fisierele :

1. de sub system/csc ... sau unde sunt alea de csc
2. epdg_apns_conf.xml din directorul /etc
3. imsservice.apk din /system/priv-app/imsservice/
4. toate fisierele de sub: /data/user_de/0/com.sec.imsservice/shared_prefs/
12. 3GPP Specifications, GSMA, RFCs, standards

GSMA documents:

3GPP:

 13. Call Flows

  • Internet APN connection, to be done 1st

  •   Activation of ims APN and SIP Registration, done after the connection to internet APN is completed


  • VoLTE call using SIP Preconditions:



  • Wireshark flows:
VoLTE Registration to IMS

VoLTE NB-AMR call (non HD) using SIP Preconditions



VoLTE WB-AMR (HD) announcement played by the network

VoLTE call to a ported number from another network; Ported WB-AMR announcement(beep) and afterwards the call is connected using NB-AMR codec; no WB-AMR interconnection between Romanian operators.



14. Links
  15. Roaming in the air: Emirates flights and SitaOnAir over Indian Ocean and Australia


  •  Digi.Mobil VoWiFi in the air over the plane WiFi


  • 2G/ Edge Orange roaming in the air with SitaOnAir
  • Aeromobile, other roamin in the air provider. They provide 3G too.





Orange Romania vs Digi.Mobil Romania (Optus AU) Roaming fees



16. Vodafone Australia, Optus Australia Network and VoLTE short info .Interconnection between VDF AU (VoLTE) and Optus AU(3G HD) is done using AMR-WB 12.65 - HD codec! Nice.

  • Optus Australia Prepaid: no VoLTE, IPv6 for VoLTE, Profil Internet 2000Mbps DL / 512Mbps UL

  • Vodafone Australia Postpaid: VoLTE, IPv6 for VoLTE, Profil Internet 536Mbps DL / 208Mbps UL


  • Optus Australia 256 QAM,  MIMO 4x4


Optus Australia 3 x CA - Carrier Aggregation on bands 28, 7 & 3

Optus Australia 4 x CA - Melbourne

Orange Romania SIM roams in Telstra Australia 4G network. It gets the QOS from home network : 300Mbps/50Mbps.




Telstra AU 4G: In Attach Accept IMS VoPS flag is 0 so the phone doesn't try to connect to VoLTE. Telstra supports VoLTE but not for roamers.

18. Orange Romania 256QAM, MIMO2x2 info

Orange profile for Postpay and Prepay : 450Mbps DL / 150 Mbps UL

Orange 256 QAM when CQI is 15 (greater than 12), no CA supported by the cell. Xiaomi Mi 6 . Old internet profile 300/50.
At CQI>=12 , ORO activates 256QAM DL. 

CQI: http://www.sharetechnote.com/html/Handbook_LTE_CQI.html





Orange 256QAM, 2xCA, MIMO2x2

MCS: 8 -> QAM 256
MCS:6 -> QAM 64
http://www.sharetechnote.com/html/Handbook_LTE_MCS_ModulationOrder.html


Qm
Modulation Method
2
QPSK
4
16 QAM
6
64 QAM
8
256 QAM





Orange 256QAM, no CA, MIMO2x2 new internet profile 450/150  . CQI15: the best.


In Release 8 the only supported bandwidths are 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15, MHz, 20 MHz. The number of "Usable" Resource Blocks allowed in each of the bands is the following:
1.4 MHz  - Usable PRBs = 6
3  MHz  - Usable PRBs = 15
5  MHz  - Usable PRBs = 25
10  MHz  - Usable PRBs = 50
15  MHz  - Usable PRBs = 75
20  MHz  - Usable PRBs = 100

19. Samsung S7 Oreo (G930FXXU2EREM) Digi VoLTE &VoWiFi

0. Cerinte: CSC ROM, root, TWRP, backup TWRP verificat; SIM Digi cu VoLTE provizionat pe el si confirmat in contul Digi - citeste paragraful: 2bis. Activare VoLTE pe SIM ;
1. cu ES File Explorer, caruia ii dai permisiuni de root din meniu, copiezi fisierul customer.xml in /system/csc, il rescrii pe cel prezent;
2. fisierului customer.xml ii dai permisiunile rw- r-- r-- cu ES File Explorer; vezi screenshot mai jos.
3. dai un restart;
4. mergi in : Settings/ Connections/ Mobile networks/ APNs/   intri in meniul din dreapta sus si dai un  Reset to default. Verifici ca a aparut APNul ims, ipv4, tip:default;  schimbi in tip: ims . Salvezi din meniu; APNurile trebuie sa fie ca in screenshotul de mai jos.
5. in meniu se activeaza switchurile de 4G call si WiFi call. Voila!






APNurile la Digi.Mobil si Orange Romania:















Detaliile Digi adaugate in customer.xml :






 20. How to check if VoLTE&VoWiFi are activated in your Samsung firmware


1. Download the Samsung software .zip file with SamFirm, see screenshot below.
2. Using 7-Zip, extract the HOME_CSC*.tar.md5 file
3. Using 7-Zip, extract the cache.img.lz4 file or odm.img.ext4.lz4(if present, continue only with this file, forget about cache.img.*) . If the file doesn't have a lz4 extension, skip the step 4.
4. From Windows Command Line: lz4 -d cache.img.lz4 cache.img  ( see https://forum.xda-developers.com/galaxy-s9-plus/help/how-to-unpack-recompile-img-ext4-lz4-t3776423 )
5. From Windows Command Line: simg2img -i cache.img -o cache1.img
6. Using 7-Zip, open cache1.img, go to \recovery\sec_csc.zip\system\csc\ROM\system\csc\ , open customer.xml , scroll down until you reach IMSSetting, check VoLTE & VoWiFi for your network.  See below.
For odm file, the path is something like: odm1.img\omc\ROM\conf\

SamFirm, lz4.exe, simg2img.exe uploaded on dropbox.

 <IMSSetting>

      <NbSetting>2</NbSetting>
..............

 <Setting>
        <NetworkName>Digi.Mobil</NetworkName>
        <EnableIMS>true</EnableIMS>
        <VoLTE>
          <EnableVoLTE>true</EnableVoLTE>
          <EnableVoiceoverWIFI>false</EnableVoiceoverWIFI>
          <EnableVideocall>false</EnableVideocall>
          <EnableVoLTEindicator>true</EnableVoLTEindicator>
          <Voice_Domain_Preference_EUTRAN>imspsvoicepreferred</Voice_Domain_Preference_EUTRAN>
          <Emregencycall_Domain>cs</Emregencycall_Domain>
          <SRVCCversion>10</SRVCCversion>
          <SS_Domain_Preference>cs_always</SS_Domain_Preference>
          <SS_CSFBwithIMSerror>false</SS_CSFBwithIMSerror>
          <USSD_Domain_Preference>cs</USSD_Domain_Preference>
          <EnableSMSoverIP>false</EnableSMSoverIP>
        </VoLTE>
      </Setting>
    </IMSSetting>
Reclame & Reclamatii


 @SethNY - forum.softpedia.com
volte22222 [at] gmail.com



" With sufficient thrust, pigs fly just fine. However, this is
        not necessarily a good idea. It is hard to be sure where they
        are going to land, and it could be dangerous sitting under them
        as they fly overhead."
      
                        - The Twelve Networking Truths


Voice over LTE, WiFi Calling, Digi Mobil Romania, Orange Romania, 3GPP, LTE, VoLTE, VoWiFi, Samsung, root, ims settings, ims, QCI 5, QCI 1, QOS, AMR-WB, AMR-NB, Apel 4G, Apel WiFi, GSMA, Network signal Guru, NSG,








at

Romanian Operators Sites and core vendors

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