I have 6s, I experience the same. After 1 hour of use, the battery drains completely. I had a video chat for 5 minutes and battery dropped about 40% during the call.
Tsahiby
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution