Essential tests for buying or selling iPhones and Android phones. Check screens, cameras, speakers, and prepare devices for resale.
Run these essential tests before purchasing to avoid costly surprises.
Document device condition and prepare for a smooth sale.
Check iPhone and Android screens for dead, stuck, or hot pixels. Essential before buying a used phone.
Test front and rear cameras for functionality, focus, and image quality issues.
Test earpiece and loudspeaker for clarity, volume, and distortion issues.
Check microphone quality for calls, voice messages, and video recording.
Test multi-touch, dead zones, and responsiveness across the entire screen.
Complete guide to securely erase your iPhone before selling. Protect your privacy.
Use our iPhone dead pixel test to display solid colors across your entire screen. Look for any pixels that don't match the background color - black dots indicate dead pixels, while stuck pixels may appear as red, green, or blue dots.
Test the screen for dead pixels and burn-in, check all cameras, test the speakers and microphone, verify touch screen responsiveness, and ensure all buttons work properly. Our tools guide you through each test.
First, run all our tests to document your phone's condition. Then follow our data wipe guide to securely erase all personal information. Finally, generate a condition report to share with potential buyers.
Yes! All our phone tests work on both iPhone and Android devices. Simply open the test in your phone's web browser - no app download required.