How to increase battery life of your gadget ?

Many times when ur middle of something and you run out of pwr.this may happen with ur cel phne or wid ur today i’l briefly explain few tricks which wil help u greatly.

1) if you’re on wifi,bluetooth, or 3g switch it off.

2) reduce your screen brightnes to whatevr extent u can.

3) close the unnecesary apps.

4) disable any graphics or 3d effect.

5) mute keypad tones or desktop alerts.

6) avoid hd videos or live streaming.