My phone is automatically switch offing please help me

I understand, from your post, that your iPhone XR turns completely OFF on its own. There may be other issues related to this behavior however I would like you to check at least one common issue, and that is the battery.

You may have a poor battery condition which cannot provide sufficient power for peak performance. What is the Battery Health of your iPhone? Open Settings ➔ Battery ➔ Battery Health and let us know which percentage you see for Maximum Capacity. Also note what is written under Peak Performance. If your battery's Maximum Capacity shows a value of 80% or less, then it has gone through its lifecycle and therefore should be replaced, according to Apple.

Axel F.

krish168 Said:

"My phone is automatically switch offing please help to solve this"

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Boot Loop:

Is your iPhone in a boot loop? If so, go here: How to Fix an iPhone in a Boot Loop - User Tip