By Michael | Last Updated
A random restart is when your device just shuts down and then starts up on its own, which is one of the common problems with iPhone. In older devices, random restarts are often related to memory issues and performance degradation. In newer devices, it is more likely to be triggered by software-related factors, including malware, software update errors and rogue applications. Random restarts can also be related to battery drain.
Anyway, before taking your iPhone to the service center for maintenance, you can start by learning why the iPhone randomly restarts and how to fix the device.
First of all, it is necessary to understand why your iPhone randomly restarts, here are some common reasons.
Damaged hardware. Hardware failure can occur if the phone is dropped, immersed in water, or if the battery is aging.
Malware. There are nearly 2 million apps in the Apple App Store, and while Apple rejects about 40% of them, not every app that comes through is safe. Using free public wi-fi can also put you at greater risk.
Interrupted updates. Some users may find that their iPhone falls into random reboots after an iOS update. This sometimes happens when a software update is interrupted for some reason, such as due to a failed network connection.
Insufficient storage on the phone. Lack of iPhone storage space is another cause of random device restarts. Older iPhones with smaller storage capacity tend to have this problem.
Forcing your iPhone to restart can help solve the problem of your iPhone randomly restarting. And it will not cause data loss. Here's how to force a reboot for different iPhone models.
For iPhone 8 or later: Press the volume up button, then release it, do the same for the volume down button, and finally press and hold the side button.
For iPhone 7 or 7 plus: Press and hold the power button and the button for volume down simultaneously while holding them.
For iPhone 6s and earlier: Press and hold the Sleep/Wake button and the Home button until the Apple logo appears.
Regardless of your iPhone model, the general requirement is to press and hold the above two buttons for about 20 seconds.
The iPhone regularly creates logs that analyze data and errors, and these logs can provide valuable clues. I recommend doing a quick scan of the last few logs, if you see the same app mentioned over and over again it could be causing iPhones to restart randomly. Try uninstalling any apps you see mentioned more than once in the most recent logs and wait to see if that fixes the problem. Here's how to find the logs.
Step 1: Open your iPhone, move to Settings -> Privacy & Security -> Analytics & Improvements.
Step 2: Then click Analytics Data, tap a recent log to open it.
If a device faces problems connecting to a wireless carrier, the phone tends to get stuck in a reboot cycle. Thankfully, one of the easiest and most reliable ways to fix this connectivity issue is to take the SIM card out and put it back in.
First, turn off your iPhone. after that, use the eject tool (or safety pin) in the iPhone box to eject the SIM card tray. Remove the SIM card. After that, wait for a few seconds, and then reinsert the SIM card.
iTunes is often used to restore iPhone to fix some common iOS glitches, including random restarts of iPhone.
Notice: Restoring iPhone with iTunes will erase all the data you have on your iPhone. Thus, before using this method, make sure you have backed up your iPhone with iTunes, iCloud or third-party app like iSunshare iSyncGenius. If not, move to the next fix to resolve the iPhone random restarts issue without data loss.
Step 1: Launch your computer and install iTunes.
Step 2: Connect your iPhone to your PC using a USB cable. Tap on the small phone icon to go to the action page.
Step 3: It will automatically recognize your iPhone. you can click Restore iPhone to restore.
iSunshare iOS Repair Genius is a software that can help you to easily and effortlessly repair randomly restarted iPhones. Besides fixing his issue, the tool can also easily repair more than 50 common iOS system problems like stuck on Apple logo, black screen of death, stuck in spinning circle etc. This tool comes with the below highlights.
Step 1: In the main screen of the software, there are two modes to choose from, Standard Mode and Advanced Mode. Standard mode allows you to fix most common system problems without losing data, while Advanced mode can fix almost all system problems, but at the cost of losing data. If you have never backed up your iPhone via iTunes or iCloud, I suggest you choose Standard mode.
Step 2: Simply hit Start button to continue.
Step 3: Make sure your device is connected to pc and click Next button at the bottom right of the interface.
Extra tip: If your iPhone cannot be detected, you need to put your iPhone in DFU or Recovery Mode. On the screen you can see a very clear guide and follow it. Then the program will continue to the next step.
You can also refer to:
How to Put an iPhone in DFU Mode | All Models
How to Boot iPhone into Recovery Mode
Step 4.1: The program will automatically recognize your iPhone model and show you the latest available version of the firmware. Click the Select button to choose where to save the package, then click the Download button to download the firmware package online.
Step 4.2: If the download fails, you can click the Copy button to download it on your browser. Then click the Select button at the bottom to import it. If you have already downloaded a firmware package on your computer, just click Select to add it.
Step 5: Wait patiently for the download to complete and the firmware to be verified. Then click Repair button to start repairing. During the repair process, your iOS version will be updated to the latest one, and you must make sure to connect your iPhone to your computer with a USB cable all the time.
Step 6: Wait for a while until a window pops up indicating that the iPhone has been successfully repaired. Click OK to end the process. Finally, your iPhone will automatically boot up and work properly.
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