Why my iPhone drained so fast even it is i th standby mode?
Hi,
This is regarding about my iPhone's battery. Before I went to sleep lastnight it has 100% battery percentage and wheN I woke up this morning the battery has only 80%. I am wondering why my battery drained so fast that it was in the standby mode. One more thing is that the standby mode and usage time is almost the same. My phone is just new. I just bought it lastweeek but this never happened for the past few days it's just today.
*Lastnight I was using snapchat, instagram, facebook and facebook messenger. It went below 20% so I charged it. And I haven't used it after it was fully charged.
iPhone 6s 64gb
ios 9.2.1