Mobile phone dont use in mobile charging time.
Sleeping place near headside dont put in your mobile, and sleeping halfon hour dont on or dont use in mobile phone in watching facebook, twitter etc.
Continuously dont see in mobile phone, each every ten or fifteen minutes cape watch other place .
First of all, dont download the unwanted your continuously not using application.
Which apps useful, that apps only download the best.
Before uninstall apps delete or clear in apps datas in setting.
Headset using time dont put ear inner side, listen to less volume.