Not sure if your hardware is failing? Run these guided checks using your phone's built-in diagnostic codes.
Verify screen colour uniformity, dead pixels, and touch responsiveness across the whole panel.
1. Dial the code to open the built-in test menu.\n2. Cycle Red, Green, Blue and White screens — look for dead or stuck pixels.\n3. Run the touch test and draw across every edge to confirm digitizer response.
Check current battery voltage, temperature and charging behaviour.
1. Dial the code and open Battery information.\n2. Note the current charge, temperature and health status.\n3. Compare voltage under load vs idle to spot a degrading cell.
Inspect signal strength, cell ID and neighbouring towers.
1. Dial the code for your platform.\n2. Read the signal in dBm — closer to 0 is stronger.\n3. Note cell ID and PLMN for troubleshooting weak-signal areas.
Test accelerometer, gyroscope, proximity and light sensors.
1. Open the test menu.\n2. Select Sensors and verify each sensor reacts to motion, light, or covering the proximity area.\n3. Fail any sensor that does not update.
Confirm the earpiece, loudspeaker and vibration motor all fire.
1. Run the vibration test — the phone should pulse.\n2. Run the melody / speaker test and listen for distortion.\n3. Place a call to verify the earpiece.
Trigger front and rear cameras through the diagnostic menu to spot lens or sensor failures.
1. Open the built-in test menu.\n2. Launch front and rear camera tests.\n3. Look for stuck pixels, discolouration, or autofocus failures.
Verify GPS satellite lock and location fix accuracy.
1. Dial the code and start the GPS test.\n2. Move outdoors and wait up to 60 seconds for a fix.\n3. Confirm satellites in view and accuracy in metres.
