Before paying for a repair, or buying a used phone, run a diagnostic. You don't need to install anything: your browser and the dialer can test almost every component.
- 1Run our Full Scan for an automatic report of display, hardware, battery, connection and sensor support.
- 2Test the screen with the Dead Pixel and Touchscreen tools, speakers with the Speaker Test, and mic with the Microphone Test.
- 3Try maker test menus via dialer codes, e.g. *#0*# on many Samsungs, see our Secret Codes list.
- 4Check battery wear with the Battery Health Calculator.
- 5Export the results with the PDF Report Generator if you're buying/selling.
Tip: A full hardware check takes under 10 minutes with these tools and catches the expensive problems: screen, battery and speakers.