Apple has recognized the issue and is supposedly researching a fix that they will include in their next iOS update. On their own support page Apple states, “If you change the time on your iPhone 6s or iPhone 6s Plus manually or change time zones when traveling, you might notice that the battery percentage doesn’t update.” So, that’s what they are saying could be the cause, but don’t have a software fix. So while we wait for that to get pushed out, we can do a little troubleshooting on our end.
- Make sure that your iPhone’s data and Wi-Fi are on and connected
- Open Settings -> General -> Date & Time
- Toggle the switch for Set Automatically Off and On again. The switch will turn gray, then green.
- Restart the iPhone by holding down the Sleep/Wake and Home button until you see the Apple logo
Once your device has restarted you should see the battery icon back to normal. Some users have also said that simply messing around with the date and time can also temporarily fix the error. Simply, toggle Set Automatically ON/OFF multiple times, or switch time zones as well.
If these steps do not work, well, here is what Apple says, “If this happens again and you didn’t change the time or time zone on your device, contact Apple Support. Apple is aware of this issue and is investigating the cause and a solution.”