My iPhone SE 2020 keeps turning off randomly
I have an iPhone SE 2 that has recently been turning off every 3 minutes; I've had this problem for about more than a week now. It switches on, and after 2-4 minutes, it switches off, even with the battery charged to full. The battery health is 85%, so I don't know why this keeps happening. Is there anything I can do to fix it, or should I get a replacement?
iPhone SE, iOS 17