There's a bug stopping some iPhone XS and XS Max phones from charging

Some iPhone XS and iPhone XS Max owners are having trouble charging their devices.

Owners across the web are complaining that some of Apple's latest iPhones are not charging properly when plugged in, MacRumors pointed out Saturday. The problem seems to occur when users plug in their phones while they are in sleep mode and the screens are off.

YouTuber Unbox Therapy was alerted to this problem and performed a test where he plugged in a bunch of iPhone XS and XS Max devices to test whether they charge while asleep, and found that several XS and XS Max phones didn't start charging until after he woke up the phone. Not only that, one iPhone XS Max was stuck in sleep mode while plugged in and he couldn't take the phone out of its frozen state until he unplugged it.

Here's how it looks:

Unbox Therapy tested all of the phones using a regular wall charger and noted in the beginning of the video that he hasn't had a problem with a wireless charging block.

The issue may stem from a security feature introduced before iOS 12 came out that prevented iPhones from connecting to devices like computers if they haven't been unlocked recently. That way a phone can't be compromised as easily.

This shouldn't be occurring when plugging a phone into a wall charger.

Apple did not immediately respond to a request for comment or a question about whether a fix will be coming soon. Hopefully it's a software issue that can be fixed with an update.

In the meantime, make sure your iPhone XS or XS Max is not in sleep mode when you plug it in or else you may not actually be charging it.