I have an iPhone 6 as well. My contract just expired in December but I am waiting for the 8 to arrive in the fall to upgrade.
This has happened to me a few times. I believe this comes down to a software glitch with iOS 10 as it did not happen prior to this release.
Upgrade iOS if you have not done it to the latest, 10.2 release. Back up your phone to iTunes or Cloud then erase the phone through General > Settings > Erase. This will do exactly that, erase the phone and place the phone back to factory default. Restore the phone from back up. The issue should be resolved.
Another issue I am experiencing is I routinely got ~ four days of battery life on my phone. Now, over the past couple of months I am getting barely three. My wear level on my battery is good, sitting at 11%. My Applecare just expired so it'll be full cost to replace the battery but I would rather wait nine months for the iPhone 8. It's irritating but my behaviors with the phone have not changed to cause this drop in battery life. I am suspicious of another software 'bug,' this one being intention by Apple, since my phone is now > two years.
Hope it helps.
This has happened to me a few times. I believe this comes down to a software glitch with iOS 10 as it did not happen prior to this release.
Upgrade iOS if you have not done it to the latest, 10.2 release. Back up your phone to iTunes or Cloud then erase the phone through General > Settings > Erase. This will do exactly that, erase the phone and place the phone back to factory default. Restore the phone from back up. The issue should be resolved.
Another issue I am experiencing is I routinely got ~ four days of battery life on my phone. Now, over the past couple of months I am getting barely three. My wear level on my battery is good, sitting at 11%. My Applecare just expired so it'll be full cost to replace the battery but I would rather wait nine months for the iPhone 8. It's irritating but my behaviors with the phone have not changed to cause this drop in battery life. I am suspicious of another software 'bug,' this one being intention by Apple, since my phone is now > two years.
Hope it helps.