How+to+use+secret+codes+on+samsung+galaxy+a7+2+work -

| Code | Function | |------|-----------| | *#0*# | Hardware test menu (LCD, touch, sensors, camera, etc.) | | *#0011# | Service mode (signal strength, network info) | | *#0228# | Battery status (voltage, temperature) | | *#0808# | USB settings (MTP, ADB, etc.) | | *#1234# | Show firmware version (AP, CP, CSC) | | *#12580*369# | Software/hardware info | | *#2663# | Touchscreen firmware version | | *#34971539# | Camera firmware details | | *#7353# | Quick test menu (speaker, mic, vibration) | | *#9900# | System dump & log menu (advanced) |

Secret codes (USSD/MMI codes) are keypad entries that launch hidden menus for testing hardware, checking device stats, or resetting certain settings. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work

Code: *#*#7780#*#* or *#27663368378# (depends on firmware)
Action: Resets the phone to factory settings.
Critical warning: This deletes all your data (apps, accounts, settings). No confirmation beyond a single pop-up on some variants. Back up everything first.
Note: On many Galaxy A7 units with Android 9+, this code is disabled. Use the Settings menu instead for safety. | Code | Function | |------|-----------| | *#0*#

Secret codes can give you quick access to hidden menus, testing features, and device info. Here's how to use them: Secret codes (USSD/MMI codes) are keypad entries that

Here’s a clear, safe write-up on how to use secret codes on a Samsung Galaxy A7 (2016/2018) — often referred to as the “A7 2” in some regions (second generation of the A series).

Important note: These codes are for diagnostic and informational purposes. Misuse can affect device functionality. Proceed at your own risk.