There is some tips that could save the battery life for your reference: 1) Use Low Power Mode 2) Restrict Unimportant Notifications 3) Turn off Wi-fi if You Don't Need It 4) Do not Activate Location Service 5) Lower Screen Brightness 6) Limit Background Refresh for Applications 7) Tighten Up Auto-Lock the shortest period for your device, namely 30 seconds.
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