The code *#*#4636#*#* (note the hash symbols) is a secret Android dialer code that opens a hidden testing menu for phone info, usage statistics, and Wi-Fi details, showing battery stats, network type settings (like 4G/3G), and usage history, but it may not work on all Android versions or brands, like some Samsung models.
You can dial *#*#4636#*#* on an Android device to open the testing menu, where you can view various insights related to your phone's network settings and performance. This menu provides the following information: IMEI. Phone number.
Code to check if phone is tapped: *#21# Code to show unknown connections and tracking (for Android): *#*#4636#*#* or *#*#197328640#*#* Code to show unknown connections and if someone is tracing you (for iPhone): *3001#12345#*
*2767*3855# → Full factory reset (wipes everything, including firmware → use with caution). *#*#7594#*#* → Change behavior of the power button (e.g., direct power off). ⚠️ Note: Some codes work only on specific Android versions or manufacturers (Samsung, Xiaomi, etc.).
The Samsung secret code *#9900# opens the SysDump menu, primarily used to delete temporary junk files (dumpstate/logcat) to free up space and potentially speed up your device, and also offers options like resetting battery statistics for better performance. It's a shortcut to system functions for maintenance, allowing users to clear logs and manage battery data, but should be used with caution as it accesses system-level functions.
Dialing *#7353# on a Samsung phone opens the Quick Test Menu, a hidden diagnostic tool that lets you quickly test various hardware components like the speaker, vibration motor, sensors (accelerometer, light), touchscreen, camera, and display colors, all through simple, one-tap options for basic troubleshooting. It's a handy way to check if parts of your phone are working without needing complex apps, though some codes may vary or not work on newer models.
3️⃣ Dial *#2663# to refresh your Wi-Fi and boost internet speed. Click on TSP FW Update for touch screen firmware updates.
Get software and hardware info (*#12580*369#)
If you want to find your phone's software and hardware information, dial *#12580*369# to get the details instead of navigating through the Settings menu.
What to dial to see if my Android phone is hacked? To confirm your suspicions, you can use the following Android phone hack check code to find out if your phone is in danger: Location tracking check: Enter ##4636#*#* or ##197328640#*#* to see if your location is being tracked.
*67 is a calling feature that allows you to hide your phone number when making calls. When you dial *67 before a phone number, your caller ID is blocked, and the person you are calling will see "Blocked," "Private," or "Unknown" on their caller ID instead of your actual phone number.
How to check your Android Bluetooth connections:
How to stop your phone from being tracked
What Does ##002# Really Do? 🔐📞 ##002# instantly cancels all call forwarding on your phone — busy, unreachable, or no-answer. It's a simple way to reset settings and protect your privacy.
One of the more clever ways to check for certain (but not all) spyware is to dial a USSD code on your phone. Call *#21# or *#62# and listen for information on whether or not your phone is being tapped. If calling the code does not return any information, that is a sign that your device is not being tracked.
Call forwarding is often enabled by dialing *72 followed by the telephone number to which calls should be forwarded. Once someone answers, call forwarding is in effect. If no one answers or the line is busy, the dialing sequence must be repeated to effect call forwarding. Call forwarding is disabled by dialing *73.
8 Signs Your Phone has Been Cloned
The 4636 code is a secret diagnostic code that grants Android phone users access to system information. With this code, one can check their data usage statistics and other features which is not typically available through the standard user interface.
Start by deleting unknown apps, updating your software, and running a security scan. Change passwords to any affected accounts and turn on 2FA. If you believe your phone has been hacked, start by removing any suspicious apps, updating your phone, and getting access back to any hacked accounts.
*#2663# Dial this code and, in the window that opens, click on 'Refresh WiFi Version. ' This will slightly improve your phone's WiFi performance!
*#7353#: This code opens the Quick test menu. This allows for a quick way to test certain aspects of your Android.
Make sure your phone is in 4G mode (4G icon on your phone). Dial the code *#0011# and press the “Call” button. This will take you to the Samsung Galaxy's service menu.
Some international numbers have a plus sign before the country code (63 for the Philippines). This (+) simply means that when dialling this number internationally, the country exit code needs to be used. In some cases, you can dial “+” on a cell or simply replace the plus sign with the US exit code - 011.
This is when certain elements can cause phones to act erratically. Dust or water under the screen's protective layer can cause random Ghost Touching. Small electromagnetic signals can also simulate swiping and tapping motions on your smart phone. The phone will open and close different apps, browsers, etc.