Apple recently announced a repair programme for iPhone 6s owners whose devices unexpectedly shut down due to a battery flaw.
Apple said the battery flaw in the 6s only affects “a very small number of devices” manufactured between September and October 2015.
According to a report by 9to5Mac, users can check if their device is affected by examining the serial number of the iPhone.
Go to Settings > General > About and scroll to Serial Number. Look at the 4th and 5th characters in the serial number.
If you have one of the following pairs, your device may be affected: