It's conceivable that your iPhone got unresponsive or frozen if it was operating normally before the screen went black and the phone grew uncomfortably heated. You should force-reboot your iPhone to see whether this is the case. Follow these steps to do so:
- Quickly press andrelease the Volume Up button.
- Quickly press and release the Volume Down button.
- Then, until you see the Apple logo, press and hold the Side button.
Bad charging accessories can sometimes fry the charging port, resulting in charging issues or overheating. In other circumstances, the problem might be with the charging cable or adapter, therefore you should try another known functional cable and adapter to rule out the chance of a defective charging cable or adapter. If you don't have a lightning cable or converter, go to the nearest Apple shop and charge your iPhone 8 using their charging equipment. If you know someone who has an iPhone 8, try borrowing his or her charger to see if it solves the problem.
