*#*#7780#*#* (Run a Factory Reset) If you don't want to run a hard reset, this is the next best thing. Similar to a factory reset, this code will simply delete all application data from your device, as well as any applications. Then, it's going to return your device back to its factory state.
*#*#4636#*#* Displays information about the phone, battery, and various network statistics.
Check out these Android secret codes
*#06# - This code will show your device's IMEI number.
Best Codes for Specific Android Phones
1809#*990# – Open the hidden services menu (LG Optimus 2x). 3845#*920# – Open the hidden services menu (LG Optimus 3D). *#0*# – Open the hidden services menu (Samsung Galaxy S3). *#011# – Display network connection and serving cell information (Samsung phones).
Android code: *#*#4636#*#*
This code will open up a menu that shows information about your phone's data usages. Here's how you can retrieve deleted text messages on your iPhone. alexialex/shutterstock.
Hidden Battery Power / Boost Signal Strength
By pressing *3370# or #3370#, you'll activate your phone's “reserve battery power”. Battery life will increase by 50%. The reserve will automatically charge up the next time you change your device. Other claims state dialing the same sequence will boost cellular reception.
##002# - If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them. *#21# - By dialling this USSD code, you would get to know if your calls have been diverted somewhere else or not.
*2767*3855# (Wipe Your Device and Reinstall Firmware)
Think of it as a factory reset—type this code on your dialer and run it, and it'll effectively delete all data from your phone, and wipe it clean.
The *#9900# code is a diagnostic mode code for Samsung mobile devices. It can be used to access a variety of system information and diagnostic tools, such as enabling/disabling fast dormancy, logging options, and system dump mode.
Hide Caller ID: *31#
The caller might have hidden the ID intentionally or sometimes it can be accidental. If you want to hide the caller ID dial *31# and press call button.
Google IMEI Tracker Online
The procedure for tracking your IMEI number via Google Earth is the same for all of your devices. All you need to do is load up Google Earth and enter the IMEI number into the search bar. You will then see a map with all of the locations where that particular device has been used.
Every genuine mobile phone has a serial number to register it to a carrier network. This number is called the International Mobile Equipment Identity (IMEI) number. The IMEI number can be used to verify the legitimacy of a phone. Often counterfeit models won't have an IMEI number or use a fake one.
One such identifier is an IMEI number which stands for International Mobile Equipment Identity. A mobile phone can be tracked using an IMEI number to know the phone's exact location. IMEI tracking can be achieved through the mobile operator, law enforcement agencies (e.g. the police) or third-party apps.
What does dialing *#21# actually do? When you dial *#21#, you are, in fact, activating a feature access code that quickly tells you the status of call forwarding for your phone. It's a quick way of seeing what, in the case of this particular 'setting interrogation code,' your call forwarding settings.
Battery status (ADC, RSSI reading) *#0011# Service Menu.
General Test Mode: *#0*# Display your IMEI: *#06# Check Your Call Forwarding: *#67# Get Even More Info on Call Forwarding: *#61# Check Your Available Minutes: *646#
Code to check if phone is tapped: *#21# Code to show unknown connections and tracking (for Android): *#*#4636#*#* or *#*#197328640#*#*
Open the Caller app on your smartphone. Now enter the blocking code for your country. In India, the blocking code for hiding you phone number is #31#. However, this code only works after network unlock.
You can easily unlock secret menus in Samsung phone using USSD codes. Open the Dialer app in your phone and type the secret code ##4636## it will open secret menu in your phone. You can also try #4636# or *#*#4636#*#* if the above code doesn't work for you.
#2 NUMBER IDENTIFICATION: The code *#30# will help you turn your number identification on or off.
The all new BLU View 3 smartphone pushes the limit to the edge with a gorgeous 6.0'' HD+ incell display, 64-Bit Octa-Core processor, 13MP Main Camera with Flash, and 8MP Camera for selfie lovers!
Call “##004#”
No one will answer when you call it, but it will turn off conditional forwarding on your phone. It will reset your phone to its default phone settings.
To bar all incoming calls and texts:
Dial *35*<4-digit code># on your mobile phone and press the call key.
Security of Android Smartphone codes : Code ## 002 # ~ Deactivates all forwarding. Code * # 21 # ~ To know whether message or call has been diverted or not. Code * # * # 4636 # * # * ~ To know Wifi connection test, Phone battery.