Battery drains very quickly while using 3g

[vishnu0058]

My phones battery drains very quickly while using 3g service, need some suggestions or solutions to rectify it.
Location: Bahrain
CARRIER: Viva

Thanks in advance

[_alexdon_]

Is your network coverage good?

[Alexander1]

You could also check what it draining battery under settings > power management > battery usage. Check this when you have less then 30% battery left and you should have 3G enabled from 100% battery. 

[vishnu0058]

Network coverage flucuates from 2 bars to 4 bars

[_alexdon_]

Does the same occur in 2G?

[vishnu0058]

My battery is drains very quickly after the firmware update getting only 6 hrs plz somebody hepl me out wit this