Electronics Repair Lot Bought off Facebook Marketplace

Two iPhones, an old Samsung Galaxy J1, and an iPhone 13 bought off Facebook Marketplace. Let's look through what we've got and do some basic diagnostics. What can be fixed?
All videos I upload should be viewed as entertainment only. If you wish to use my guides to help you repair your own devices, any damage you cause to your device as a result of following my guides is your own responsibility.
Outro Music by Darren Curtis
Drifting Through Space
/ @darrencurtismusic