Things to check before buying a used Macbook

Here’s my checklist before buying a used Macbook:

• Does it have box and receipt?
• Cosmetic issues?
• Passwords? (does it have all the passwords such as admin user, firmware and iCloud passwords)
• Screen brightness (make it brightest and check if any death pixels)
• Physical screen!
• Keyboard Test (with keyboard lights – you might not able to see the keyboard lights in bright spaces)
• Trackpad (check Multitouch, 4 fingers, 3 fingers,..)
• See USB ports (if any broken things)
• Wi-fi + Bluetooth test
• Camera (Open Photo Booth app)
• Speakers (make it loudest and check)
• Battery ( About this mac > System Report > Power > Cycle Count should be lower than about 700 ) 
• Speed test (open some apps, folders)
• Charger is fine?