- Enable power saver mode: Go to Settings >> battery saver And then tap Advanced >> select options either 'when battery is
low' or 'Now until next charge'. There is also a third option -
'Always', but this is not recommended as this affect overall functioning
of apps in the smartphone
- Lower the screen brightness: Go to Settings >> Automatically adjust, Switch the level to low.
- Disable Wi-Fi: If not needed,
Go to Settings >> Wi-Fi >> switch-off Wi-Fi networking
- Turn off location services: Settings. Swipe to applications, tap people, and switch Use my location to Off
- Disable auto connect to Xbox games online: Go to Settings >> swipe left side to 'applications'
Then tap on 'games' >> switch off 'Connect with Xbox'
- Use 2G network instead of 3G: Go to Settings >> tap mobile network >> Data connection- off
Go down tap Highest connection speed >> select 2G (it's enough to receive good quality signal to get or make calls)