Talk to Apple Support
If you’ve tried everything and your iPhone or iPad still isn’t working, you need to talk to the experts. You might be having some sort of hardware problem, so you’ll need to talk to someone to repair it for you.
You can go to an Apple retail store or an Apple-authorized service provider so they can help you out. Or you can also go to the official Apple Support website and contact Apple Support online to see what you need to do.
Unfortunately, it’s probably going to cost you, but if your iPhone or iPad’s still working fine, this little change might give your device a few more years of life.