Check, Diagnose & Understand Your Phone

Phone diagnostic tests, secret codes, IMEI tools, device information and troubleshooting guides.

MobileCodes is grounded in a verified codes database. Try destructive codes at your own risk.

Explore MobileCodes

Guided self-tests for display, battery, sensors and network.

Verified dialer and USSD codes for every major brand.

Validate an IMEI, read the TAC and check digit in your browser.

Run guided display, battery, sensor, camera and network self-tests using built-in device codes.

Validate an IMEI with the Luhn algorithm and get pointers to official TAC / carrier lookups.