How To Use Secret Codes On Samsung Galaxy A7 -2... Site

*#0011# – Service Mode. This provides technical details about your current Wi-Fi or cellular connection, including frequency bands and signal-to-noise ratios.

*#*#4636#*#* What it does: Opens the Testing menu (Phone Information, Battery History, Usage Statistics, Wi-Fi Info). On the Galaxy A7, “Phone Information” lets you:

These codes work best on Android 6–8 (Marshmallow to Oreo). For newer devices (Android 10+), only a subset functions. How to Use Secret Codes on SAMSUNG Galaxy A7 -2...

For Android 9 Pie and above (One UI), Samsung has disabled some codes for security reasons. We’ll note which ones still work.

*#0228# – Battery Status. This shows detailed voltage info and battery health levels. Firmware and System Information *#0011# – Service Mode

*#2663# – Firmware Update Menu. Use this to manually refresh the TSP (Touch Screen Panel) firmware or Wi-Fi versions if they become unresponsive. Important Safety Warnings

⚠️ Use these codes carefully. Some codes trigger factory resets or disable features. Do not use codes if you don’t understand their function. On the Galaxy A7, “Phone Information” lets you:

Here are some of the most useful secret codes for the Samsung Galaxy A7: