Iphone 6 drain battery standby overnight 10 percent. (Whats problem?)

[iMore Question]

8 hours standby mode 10 persent drain

 

[Annie_M]

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In regards to your question, it could be that the battery is old. If I were you, I'd contact Apple Support regarding this issue. Or, if you have an Apple Store nearby, consider making an appointment with the genius bar.

Good luck and please keep us posted.