Apple has blamed a bug in its operating system and updates to apps such as Instagram for its new iPhone 15 overheating.
Since the latest model of the smartphone went on sale in September, some users have complained the devices are getting too hot to touch.
Apple said there was a bug when updating iOS 17 on the phone.
But it also claimed that changes to third party apps are “causing them to overload the system”.
iPhone users have come to expect their devices to become hotter during the initial set-up or when they are being backed up, due to the amount of processing power being used and the handset working overtime – but these issues with the iPhone 15 have been worse.