I've had the iPhone 6s for a year now and it's worked great. All of a sudden (around the time of updated to iOS 10) the battery started having issues. It will turn off around 70-90 percent and I can't turn it back on until it's charging, then battery percentage will be back at 70-90. I know that it's not because the battery is actually dead, I can't go more than 10-15 min before it dies after a full nights charge. Any one else having problems with this? Thanks for any help you can give.
