I also used thar firmware.
Hey I am also facing the same issue of volte not working.I also used thar firmware.
No 991 and 998 ar different devices.
SM-G991U / Galaxy S21 5G SM-G991U TMB samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅samfw.com
This is the firmware you want ( i have installed this one)
S21 is 991 model.
998 i assume is s21 ultra
Don't be confused that it is written Model 991U. Mine is 991U1 ;-)
I can support you remotellly if you wand on Monday just share desktop with Anydesk.
very interesting, sims Samsung started roll out just yet since i couldn't find BULH firmware even on sammobile
I can confirm in Turkey, volte and vowifi finally started to work immediately after updating to BULH for 998U1 fw
Thanks for confirmation I'll try on 991 U1 as soon as it will be available on s21
Yeah, I have U1 model and volte does work now. However there's a bug if you are using volte wifi calling. In case, you connect your device to another wifi, volte goes away and only fix is to reboot the device. Regarding phone number, yeah I can see it in about phone.Hi, Thanks for your information that would help
unfortunately I have waisted lot of time to find out the reason and U firmware helped, could you be so kind to check 1 thing if you are still on U1 ? and VoLTE is working? if yes please can you tell us if the phone number is visible in About Phone > Phone number?
because on U1 firmware it was never being visible even on android 11