Android Secret Codes 2026: The Complete Guide to Hidden Features & Diagnostics

If you’ve ever wondered whether your Android phone has hidden features (Android Secret Codes) that only technicians know, the answer is YES.

Welcome to the world of Android Secret Codes—special numeric combinations that unlock hidden menus, diagnostic tools, hardware testing options, and advanced system information.

In 2026, Android devices have become even more feature-rich, and these secret codes can help you check battery health, test sensors, improve performance, troubleshoot issues, and unlock service menus like a pro.

This guide covers all major Android secret codes, how to use them safely, and which codes work on Samsung, Xiaomi, OnePlus, Realme, Vivo, Pixel, and others.

⭐ What Are Android Secret Codes?

Android secret codes are special numeric sequences (like #06# or ##4636##*) entered in the phone dialer to reveal hidden functions that are not normally visible.

These codes help you:

• Run hardware tests

• Access phone information

• Check battery usage & temperature

• View IMEI number instantly

• Perform network diagnostics

• Enter developer-level menus

Important: Some advanced codes can reset your device. Use them carefully.

Most Useful Android Secret Codes 2026 (Updated List)

🔍 1. Phone Information & Network Testing Code

📌 ##4636##

This is the most used Android diagnostic menu.

It shows:

• Phone information (LTE/5G status)

• Network type

• Signal strength

• WiFi information

• App usage stats

• Battery status

Works on: Pixel, Samsung, Xiaomi, OnePlus, Realme, and Oppo.

🔋 2. Battery Health & Usage

*📌 #0228# (Samsung Only)

Battery status and voltage readout.

📌 ##4636##

Battery temperature, health, & remaining capacity.

📱 3. IMEI Information

*📌 #06#

Shows your device IMEI instantly.

Works on all Android phones worldwide.

🧪 4. Hardware Test Codes

Samsung

• 📌 #0# → Full hardware test menu
  (display, touch, vibration, sensors, speakers)

Xiaomi / Redmi / Poco

• 📌 ##6484## or ##64663##
  Opens the CIT hardware testing tool.

OnePlus / Oppo / Realme

• *📌 #808# → Engineering test

• *📌 #801# → Engineering mode

Vivo

• *📌 #558# → Hardware test

🌐 5. Network & Connectivity Codes

📡 LTE/5G Test

• 📌 ##4636##

• 📌 ##3264## (Certain devices)

📶 WiFi MAC Address

• 📌 ##232338##

📡 Bluetooth Test

• 📌 ##232331##

🎧 6. Audio & Speaker Testing

• 📌 ##0289## → Sound test

• 📌 ##0673## → Audio test

🎥 7. Camera Diagnostic Codes

• 📌 ##34971539## → Camera info

• 📌 ##759## → Debug menu (Pixel)

🧰 8. System & Software Codes

Software Version

• 📌 ##1234##

• 📌 #12580369# (Samsung)

Firmware Update

• 📌 #8736364#

⚠️ 9. Dangerous / Wipe Codes (Use Carefully!)

Factory Reset

• 📌 ##7780## → Soft reset

• 📌 27673855# → Full wipe (Samsung)

Service Mode

• *📌 #9090# (Samsung)

Only use these if you know what you’re doing.

🔥 Brand-Wise Android Secret Codes 2026 (Quick Table)

🧠 How to Use Android Secret Codes Safely

• Avoid factory reset codes unless necessary

• Some codes may not work on all models

• Engineering codes vary by region

• Always back up your data before performing resets

📌 Frequently Asked Questions

1. Are Android secret codes safe?

Yes—most diagnostic codes are safe, but reset codes should be used very carefully.

2. Why do some codes not work on my phone?

Manufacturers often disable certain codes depending on software version, region, or carrier.

3. Can I unlock hidden 5G bands using secret codes?

Usually no—this needs engineering access & carrier permissions.

🏁 Final Thoughts

Android devices come with hundreds of hidden features, and Android Secret Codes are the fastest way to unlock them. Whether you want to diagnose issues, check battery health, or test hardware, these codes make your smartphone more powerful.