[yajur]

For fast 7 days i had big problem of battery backup in my lumia 920

i tired update to new version
wifi off,gps off,syn off,battery save on etc .. nothing worked

at last i changed the SIM card all of sudden my battery backup is great now

previous i used 3G SIM(BSNL network) now i changed the SIM to vodofone 2G

hope it may help for some people

[K Rad]

I have a BSNL 3G sim as of now.... battery runs for 14-15 hours on 2G standby and average use and battery save mode off. I wonder if Number Portability would work out - since some ppl say BSNL has signal strength issues and constantly changes receiving towers. Don't wanna switch to 2G though.

[yajur]

I have a BSNL 3G sim as of now.... battery runs for 14-15 hours on 2G standby and average use and battery save mode off. I wonder if Number Portability would work out - since some ppl say BSNL has signal strength issues and constantly changes receiving towers. Don't wanna switch to 2G though.

in my area BSNL is only provideing 3G so that only iam staying with BSNL