Following reported cases of overheating during use by users of the latest iPhone Pro and iPhone Pro Max products Apple has identified its causes, including a software bug and using certain apps.

The tech company said it would issue an update to fix the bug in its iOS 17 software and was working with developers whose apps had overloaded its handsets.

Users complained iPhone Pro and iPhone Pro Max products could heat up to temperatures of more than 43C (110F) in some cases.

“We have identified a few conditions which can cause iPhone to run warmer than expected,” said Apple in a statement.

Among the apps blamed for the problem are Instagram, Uber and the video game Asphalt 9, according to Apple.

Instagram already fixed the issue with its app last week.

The upcoming iOS 17 bug fix will not reduce performance in order to address the iPhone’s temperature.

Apple stressed that the warming phones is not related to the new titanium casing that houses the iPhone 15 Pro and iPhone 15 Pro Max instead of the stainless steel used on older smartphones.

It also dismissed speculation that the overheating problem was anything to do with the new USB-C port that allowed it to comply with a mandate issued by European regulators.

Apple said the issue is not a safety or injury risk and will not impact the phone’s long-term performance.