:-Check the following steps to save the battery in your phone
1.Let your screen turn off sooner. To reduce battery drain when you're not using your screen, set a shorter time before your screen turns off.
2.Reduce screen brightness. To save battery, lower your screen's brightness.
3.Have screen brightness change automatically.
4.Turn off live wallpapers.
5. Turn off apps when not in use.
6. Turn off internet when not in use.
7. Turn off background data of your phone.
8. Switch off Wifi, Bluetooth, NFC and Locating when not in use.
You can watch this video link for more details:
You can check the complete specs of this phone: