To increase your battery power?

1) Go sitting>phone>display> brightness (dark)

2) Go sitting>network>network mode (gsm) dual mode used for 3g & gsm network but gsm
used only gsm network, so dual mode need power more then gsm]

3) After used bluetooth u must turn off it, Bcoz if u bluetooth turn no after 8 house your battery 50% charge over

4) Used ringtone not vibration alert.

5) After hear songs must removed head-phone.

6) Turn off your mobile then charge. Its good 4 your mobile health.

7) More switch off/on  need much power.

8) Turn off your key-pad sound.