iPhone 12 Pro Max Overheating – Flash Is Disabled Issue

iphone 12 pro max overheating

iPhone 12 Pro Max overheating?

Is your brand new iPhone 12 Pro Max overheating? Does the device feel warm to touch when you pick it up without it being used before? Worse, are you prompted with the ‘Flash Is Disabled’ prompt when you open the Camera app. Does your device need to cool down before you can use the flash? This seems to be caused by an iOS 14 bug that causes the iPhone 12 Pro Max to excessively reindex apps in the background.

iPhone 12 Pro Max units plagued by the overheating issue are also experiencing lagging. This can be noticed when randomly opening apps, some might require up to 30 seconds to run. Reader Paolo F. has mailed us about this problem and also informs that he contacted Apple support about it. Apparently, this is a known issue and the company is collecting logs about the issue.

iPhone 12 Pro Max Overheating Issue

The app load problem is occurring in both iOS 14.2 and iOS 14.2.1 software versions. The iPhone 12 Pro Max ships with iOS 14.1 pre-installed.
Important: Please be aware that every time when you upgrade to a new iPhone the device requires one or two days until all apps and iCloud data are indexed and updated with your usual configurations. During this process most iPhones might overheat and act overloaded, especially if you’re running resource intensive apps, while indexing is performed in the background.
However, if you passed this stage and the the iPhone 12 is still overheating and lagging, this isn’t normal anymore.

How To Fix iPhone 12 Pro Max Overheating

There’s not much that you can do about it, until Apple releases a software update with an official fix. Here are some temporary troubleshooting tips:

1. Force Close Apps

An option to improve overheating is to make sure that you close apps for good after you stop using them, instead of allowing them to remain active in the background. This is done from the App Switcher. Swipe-up & hold from the bottom of the screen. Dismiss the cards of the apps that you want to permanently close.

2. Avoid Resources Intensive Apps

If your iPhone 12 Pro Max experiences overheating, it would be a wise move to refrain from using apps that demand a lot of resources. Such as complex gaming or photo & video editing software.

3. Charge In Airplane Mode

Enable Airplane Mode at night before you charge your device. This will cut the Internet connection, thus prevents app from indexing and overheating your iPhone. Your iPhone is prone to warm up when charging, if this overlaps with the iOS 14 app load bug, they device might overheat.

4. Charge With Lightning Cable

You should use the Lightning to USB-C cable that has shipped in the box with your new iPhone 12 model. Wired charging generates less heat than the wireless inductive charging process, promoted by MagSafe. In fact, we’ve got reports about iPhone 12 Pro Max units getting hot during MagSafe charging. Overlapping the app reindexing bug with potential overheating problems generated by magnetic charging could make your iPhone be literally hot.

Update (December 17): The iPhone 12 overheating issue seems to have been aggravated in iOS 14.3. Our devices overheat during FaceTime calls, although they haven’t in iOS 14.2. We’ve created a separate article about this escalation here.

Until now this problem has been isolated to the iPhone 12 Pro Max. Are you experiencing similar overheating issues with the iPhone 12, 12 mini or 12 Pro. What about an other model? Use the comments section and share your feedback. Don’t forget to mention the iOS version that your iPhone is running when experiencing the issue.

Related: Other iPhone 12 Pro Max issues reported are:
iPhone 12 No Service, poor signal and dropped calls problem.
– iPhone 12 Pro Max not charging wirelessly with MagSafe.
iPhone 12 yellow screen issue.
– iPhone Lock Screen sound glitches when MagSafe case is added.