How to Run Diagnostics on Your iPhone or Android Phone
Wondering if your smartphone is doing well? Whether it's a used phone you've just bought or an old device you're looking to sell, you can run it through a series of diagnostic tests. Some Android devices have built-in diagnostic tools, but the App Store and Google Play Store also offer third-party diagnostic tools. Apps like Phone Doctor Plus, Phone Diagnostics, Phone Check and Test, and TextX can run a variety of tests to check your phone's touchscreen, audio, video, camera, microphone, sensors, and other components. That's how they work. Run diagnostics on Samsung phones Samsung's Galaxy smartphones come with a built-in diagnostic tool that can be accessed from the keyboard. Open the Phone app, tap Keyboard, and then type * #0*# #0*# . A diagnostics screen appears with buttons for a variety of tests. Beat Red , green or blue to test these pixel colors. Beat recipient to check the sound vibration to try the vibration function, or sensor to test the a...