After the clock update, Apple Watch Series 3 before watch OS 8.7, users encounter a problem with an automatic restart of their watch. The sad thing is that it was almost impossible to identify a pattern in this situation. The device can restart at any time. Where reset the clock to factory settings, breaking a pair with an iPhone, and other common ways to solve the problem did not help in this case.

But, apparently, a way out of the situation still managed to be found. Moreover, the company itself managed to do this. Apple. Let’s see what is the reason for these reboots and how this problem can be fixed.
How to update your Apple Watch?

Some users don’t want to change the third series to something newer because all the features work fine.
Apple Watch Series 3 already saw the light of day in 2017 and continues to receive updates. As you already know, watch os 8 will be this watch’s last version of the operating system. It’s the right decision, Apple. This device is already obsolete, and it’s time for him to rest. But it would seem that even in such a debugged and long-familiar gadget, quite critical errors can occur.
The reboot problem is one of them. Good thing that Apple does not abandon a broken device and continues to correct errors in its software. To get rid of constant spontaneous reboots of the Apple Watch Series 3.
You need to update them to the new version of watchOS 8.7.1. This is an exclusive version designed exclusively for this watch model. She didn’t go out for anyone else. To install it, you need to do the following:
- Make sure your watch is paired with your iPhone and is charging.
- Open the watch app.
- Go to your watch and go to the main settings.
- Select the “Software Update” section.
- Download the new operating system and install it, having previously confirmed everything that the application will ask you.
Installing new software versions on the watch does not happen quickly, so you must wait for the process to complete. After their update, the random reboot issue will be solved, and the apple watch will work as before.
Even if you have not encountered similar problems, install this version anyway. It’s possible that you just got lucky, but that doesn’t mean similar issues won’t arise in the future.
How to Factory Reset Apple Watch?

In the third series, the watches with the smallest screens in the entire range.
But the problems may persist even with the new version of the software. In such a situation, you should start with a force restart. Most likely, some error has crept into the watch, which you must try to fix on your own. To do this, you must press the digital crown and the side button until it appears on the Apple Logo screen.
After the clock is charged, observe its behavior for some time. If the problem does not arise, it turns out to be solved. If it happens again, you should move to a more drastic solution – reset factory settings and reconnect to the iPhone. For this, you need:
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- Open Settings on your Apple Watch.

These few simple steps allow you to perform a quick reset directly from your watch.
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- Go to the “Basic” section.
- Select “Reset”.
- Click the “Erase Contents and Settings” button.
- Confirm the reset by entering the password and click “Erase All” to confirm.

Pairing via notification is the fastest way to pair.
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- After the reset is complete, put the apple watch on your wrist and hold the watch close to your iPhone.
- Once prompted to create a pair, accept and follow the instructions on the iPhone screen and apple watch.
The most important thing is to put the clock back as new and not restore them from old backups. In this case, the probability of an error will be significantly reduced.
It is better to spend a few extra minutes on this, but you are guaranteed to get a working device.
Unfortunately, a factory reset is also not a panacea and may not help. If you have followed all the above steps and the reboot problem persists, you should contact the service center.
Your problem may be much more complex and profound than some software failure.
The times have increased slightly, but any repair is carried out clearly. Some devices can even be repaired under an extended four-year warranty. We talked about it in a separate article.
Therefore, you shouldn’t have your gadget problems with restoring work capacity. In general, the problem is unpleasant but solvable. Above all, don’t give up.
How to Erase Apple Watch?
If you’re on an Apple Watch with a non-cellular plan, you will be asked to choose to Erase All or Erase and Keep Plan.
Note that if you erase and restore it with your cellular Plan in place, you will lose all of the data stored on your watch—the data synced with your iPhone.
If you have an Apple Watch with no cellular plan, your watch will ask whether to erase and restore it with your cellular Plan.
To erase and then restore it with your cellular Plan in place, follow these steps:
Open the Settings app on your Apple Watch.
You can also choose Erase All. Note that if you choose to erase and restore it without restoring the data on the watch, the watch will not be able to sync its data again until a new battery is added.
This is described below: “How long will my Apple Watch be able to sync its data?” If you choose this option, follow these steps:
Open the Settings app on your Apple Watch.
Go to General > Reset > Erase and Keep Plan; enter your passcode (if prompted).
You can also choose Erase All. Note that if you choose to erase and restore it without restoring the data on the watch, the watch will not be able to sync its data again until a new battery is added.
This is described below: “How long will my Apple Watch be able to sync its data?” If you choose this option, follow these steps:
For iPhone and iPad:
Open the Settings app on your iPhone or iPad. Tap General. Tap Reset. Tap Erase All & Keep Plan; enter your passcode (if prompted).
For iPod touch: Open the Settings app on your iPod touch. Open Music > iTunes Store > Apple ID > Password or Passcode: Enter a password (password must be at least 8 characters long).
The password would have been automatically generated by iTunes when you set up an Apple ID with a credit card number for purchases from iTunes Store. Follow these steps to reset an Apple ID for purchases from iTunes Store with a credit card number attached to it:
If you have purchased music from iTunes Store using a credit card number, follow these steps if you want to use this credit card number again after resetting an Apple ID for purchases from iTunes Store with a credit card number attached to it: