Phone restart and hangs

My phone restart sometime automatically. But recently after my phone restarted, my theme was modified and I cannot type on my phone. So I've to restart my phone to make it work.and after restart while writing this comment it hangs and I've to lock and then unlock the screen. Please provide some support, this bug is creating concerns with ROG phones. Please provide fixes for this issue ASAP. This never happened before the recent update. But after update this has been produced 3-4 times.
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Comments
Does your phone actually restart by itself?
If not, do you have any recent apps running? You can clear this by pressing on the left button (sqaure) if you have the classic navigation and press on Clear All. You should do this regularly.
If your phone does restart by itself, then please continue to read below:
The advice made by moderator/admins is to take the device to a service centre. You can see the recommendation here:
You can find the location of your service centre here:
Hi,
Sorry to hear this. If you feel the device is restarting again and again even during normal operation.
I advice you to Kindly visit the nearest service center:
Due to the lockdown, service centers may not be functional. Kindly call the service center before you visit one.
https://www.asus.com/in/support/service-center/india