iOS1.4 + iPhone SE 1st

My iPhone SE 1st will be stuck every 30 secs or so
I think it's sth because it's a second-handed one
I've used Instruments but can't find anything
Anyone HELP
Thanks🙏

Hi there,

You might have better luck asking this question over in Apple Support Communities run by Apple Support.

iOS1.4 + iPhone SE 1st
 
 
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