Fortunately, Apple’s shiny new iPhone 6S and 6S Plus don’t bend in users’ pockets. But the new phones have their own set of issues. Now several users have started reporting that their iPhone 6S turns itself off randomly for no apparent reason. The issue occurred even when users left their phones unattended and there was plenty of battery life available, reports MacRumors.

iPhone 6S Turns Off Randomly For Some Users

It could be a software bug rather than iPhone 6S hardware issue

It’s still unclear what is causing the iPhone 6S to turn off. Users have reported the issue on Apple’s support community and Reddit. Many users said their home button feels warm when they tried to turn it on. It points to an overheating issue. A few days ago, many users reported that the camera app would automatically disable the Flash with a warning, “the iPhone needs to cool down before you can use the flash.”

The overheating issue could be caused by a bug in iOS 9. The phone turns off automatically to prevent any internal damage. After it is turned off, the only way to bring it back to life is to hold down the home and power buttons together for 10 seconds. Apple is yet to confirm the issue, but data indicates that iOS 9.0.1 was most affected by the issue. Many users even said they were late for work because the bug prevented the alarm from going off.

Considering upgrading to iOS 9.0.2

IBTimes recommends that once you have turned on the phone, go to Setting and reset factory settings. Then you can update to iOS 9.0.2, which promises to fix several bugs and glitches. Since the iPhone 6S and 6S Plus went for sale last week, users have complained about numerous issues including battery problems, Slide to Upgrade bug, and crashing.

Apple sold more than 13 million iPhone 6S and 6S Plus in the first weekend of launch, smashing all the previous records.