DeviceMint: Phone Diagnostics

Is this phone working? DeviceMint walks you through clear, guided hardware checks and tells you honestly what it found, including when it can't tell. Use it before you buy or sell a used phone, after a repair, or whenever something feels off.

QUICK TEST, FULL TEST, USED PHONE CHECK
• Quick Test: the checks that catch common faults, in about 2 minutes
• Full Test: every check, one after another, with a summary of the results
• Used Phone Check: an inspection list for buying or selling (screen, body, buttons, charging port, camera lenses, the seller's account), then the hardware tests
• Or run any single test on its own

WHAT IT CHECKS
• Display & touch: screen colours (dead or stuck pixels), brightness, touch screen coverage, multi-touch
• Cameras: every rear and front camera Android gives apps access to, plus the flashlight
• Sound & vibration: speaker, earpiece, microphone (record and play back), vibration
• Buttons: volume up and volume down
• Sensors: proximity, light, accelerometer, gyroscope, compass
• Connectivity: GPS fix, Wi-Fi, Bluetooth, NFC, USB devices
• Battery & charging: level, voltage, temperature, Android's health status, and whether it charges
• Security: fingerprint or face unlock through Android's own prompt

HONEST RESULTS
Every test ends with one of six results: Passed, Failed, Inconclusive, Not supported, Skipped, Not allowed.
• Automatic results show that a part responds, not that it meets factory specifications.
• Manual results record what you saw or heard yourself.
• “Inconclusive” means the test couldn't decide, for example no GPS fix indoors. It is not a fault.
• If your phone lacks a part, or Android doesn't let apps test it, DeviceMint says so instead of guessing.

HISTORY AND REPORTS
• Your results are saved on your device, with the date, model and Android version
• Share a clear report as text, or choose to watch a short ad to unlock one PDF report
• Handy proof of condition when you sell a phone, or a quick check before you buy one
• This version shows your latest 5 results; older ones stay on your device

PRIVATE BY DESIGN
• No account, and your results never leave your device unless you share them
• Each permission is asked only when the test that needs it starts, and you can say no
• Camera pictures and microphone recordings are never saved
• DeviceMint never reads the IMEI or serial number

FREE, WITH ADS
Every test is free. DeviceMint shows Google AdMob banner ads on the Home, Tests, History and Settings screens and on finished results, never during a test. The only full-screen ad is a rewarded ad you choose to watch, to unlock one PDF report. Where the law requires it, you are asked for consent first, and you can change your choice in Settings.
Premium features are coming soon. We're preparing additional features for a future update. Stay tuned!

Light and dark themes, free. Available in 18 languages.

Works on Android phones and tablets running Android 7.0 or newer. Some tests depend on your hardware and on what Android lets apps access on your device.

Made by Mobile Castle.