Guides to checking a used device

Step-by-step guides for buying a used iPhone, Android phone, laptop or MacBook: screen, battery health, account locks and replaced parts.

How to check a used iPhone before you buy itCheck a used iPhone step by step: Activation Lock, IMEI, replaced parts, battery health, screen, Face ID, speakers and cameras. With free tests that run in Safari.How to check a used Android phone before you buy itWhat to check on a used Android phone: Google FRP lock, IMEI, Samsung's *#0*# test menu, battery health, OLED burn-in, touch and cameras.How to check a used laptop before you buy itUsed laptop checklist: screen, keyboard, touchpad, battery wear with powercfg, SSD health, fans and temperatures, hinges, ports and BIOS passwords.How to check a used MacBook before you buy itWhat to check on a used MacBook: Activation Lock, company MDM enrollment, battery cycle count, screen coating wear, keyboard, Touch ID and speakers.How to check the screen of a used phone or laptopHow to spot dead and stuck pixels, OLED burn-in, LCD backlight bleed, replacement screens and dead touch zones on a used phone or laptop, with free tests.How to check the battery of a used phone or laptopRead battery health on iPhone, Samsung, Pixel, Windows laptops (powercfg) and MacBooks, and spot swollen batteries, loose charging ports and fast drain.