This is the most famous Samsung code. It opens a hardware diagnostic menu. It is incredibly useful if you’ve just bought a used phone or dropped yours and want to check for damage. Checks for dead pixels on the display. Receiver: Tests the earpiece. Vibration: Tests the haptic motor.
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The SAMSUNG Galaxy S24 FE is more than just a "cheap flagship." By learning how to use secret codes, you transform your phone into a professional diagnostic tool. You can now test the AMOLED display for burn-in, verify the 5G antenna strength before signing a carrier contract, or check the health of the 4,500mAh battery instantly.