i dropped my iphone 16 pro back in last september, the screen got destroyed and afterwards i got it fixed. 3 months later in january. it suddenly began to turn on and off every 3 minutes. so i got the battery switched. it worked for 4 days after the battery switch. and now every time i turn it on, 3 minutes passes by and then it restarts instantly, and that keeps happening. what could be wrong? pls help
[Re-Titled by Moderator]
Original Title: iphone 16 pro issue