How+to+use+secret+codes+on+samsung+galaxy+a7+2+work 2021 [CONFIRMED • 2025]

*#7353# Action: Opens a simpler self-test interface. What you can do: Test speaker, receiver, microphone, vibration motor, and the IR LED (if your A7 variant has it). Exit: Press "Back" or "Finish."

On the running Android 8.0 (Oreo) up to Android 10 (with One UI 2.0), several of these codes remain functional—though Samsung has locked down many since the Android 9 update. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work

Samsung Galaxy devices utilize USSD/MMI secret codes, entered via the dialer app, to access diagnostic menus for testing hardware, checking battery health, or viewing firmware details. Key, generally applicable codes include *#0*# for hardware tests, *#06# for IMEI, and *#0228# for battery diagnostics. *#7353# Action: Opens a simpler self-test interface

If you try these, treat them as quick tools: check IMEI, run diagnostics, review firmware and battery info, but avoid codes that alter or reset the phone unless you’re prepared. : A faster alternative to test specific functions

: A faster alternative to test specific functions like the melody, camera, and dimming. *#0011#