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Mobile phone test code, Service code

The USSD protocol allows you to access hidden features you didn’t know about right from your smartphone’s dialer. But there is some trickiness you’ll need to know about.

Accessing the Secret Diagnostic Menu

Before we begin, it’s important to note that this feature may not be available on your device. Certain carriers, most notably Verizon and Sprint, have been known to block the code-based diagnostic mode on their Samsung smartphones and tablets, though newer phones from Sprint like the Galaxy S6 seem to have this functionality restored.

To get the ball rolling, simply open your Samsung’s phone app. From there, enter *#0*# using the dial pad, and the phone will immediately go into its secret diagnostic mode. Note that the process is automatic, so there’s no need to tap on the green call button to enter the command. So if you enter the code and nothing happens, the feature is disabled on your device.

General Test Mode: *#0*# (Samsung)

It works on Android. This prompts a library of different phone operations, which could be operated with a single push (e.g. Sleep, Front Cam, Vibration).

Display your IMEI: *#06# (All mobile)

To access it, type in the above code, and then the green call button to prompt your IMEI number.
The IMEI is unique to your device. Among other things, the number can help “blacklist” stolen devices or help with customer support.

Check Your Call Forwarding: *#67#

This code allows you to check which number your phone is currently forwarding calls to when you’re busy or reject a call.

By default, this is probably your carrier’s voicemail service, but you can change it to forward to a different number (a home number, office number, or third-party answering service for example). On an iPhone, you can change this number by going to Settings > Phone > Call Forwarding. On Android (varies from system to system), tap the Phone app > hamburger icon > Settings > Call > More Settings > Call forwarding

Get Even More Info on Call Forwarding: *#61#

On Galaxy phone, this code prompted a pop-up that explain how long until a call is forwarded to the message center. On the iPhone, regardless of carrier, this code just show the same info as *#67# .

Check Your Available Minutes: *646#

Apparently this one only works on postpaid plans. It work on Galaxy phone. Instead of showing the info on a new screen, it send to the phone a text message.

Check Your Bill Balance: *225#

On Android it prompt a SMS message with current balance due.

Hide Your Phone From Caller ID: #31# (Some network not Support)

Works on Android. But entering this code prompted a pop-up stating that Caller ID had been disabled. In order to re-instate Caller ID, enter *31# .

Check Your Billing Cycle: *3282#

Works on Android. It prompt an SMS message with billing info.

SMS Message Center: *5005*7672#

This code will tell you your SMS message center number.

Activate Call Waiting: *43#

This code will activate call waiting; you can deactivate it by entering #43#.

Quick Test Menu (Samsung)

*#7353#

This code only works on Samsung Galaxy models. This is similar to the General Test mode mentioned earlier, in that it brings up a menu with a number of one-tap test prompts.

Firmware (Samsung)

*#1234#

Only works on Galaxy devices. But it will let you know your phone’s current firmware. So, have fun with that.

Android Hidden Codes(Some phones not suppot)

To enter these codes just pull up the default dialer.
Code Description
*#*#4636#*#* Display information about Phone, Battery and Usage statistics
*#*#7780#*#* Restting your phone to factory state-Only deletes application data and applications
*2767*3855# It’s a complete wiping of your mobile also it reinstalls the phones firmware
*#*#34971539#*#* Shows completes information about the camera
*#*#7594#*#* Changing the power button behavior-Enables direct poweroff once the code enabled
*#*#273283*255*663282*#*#* For a quick backup to all your media files
*#*#197328640#*#* Enabling test mode for service activity
*#*#232339#*#* OR *#*#526#*#* Wireless Lan Tests
*#*#232338#*#* Displays Wi-Fi Mac-address
*#*#1472365#*#* For a quick GPS test
*#*#1575#*#* A Different type GPS test
*#*#0283#*#* Packet Loopback test
*#*#0*#*#* LCD display test
*#*#0673#*#* OR *#*#0289#*#* Audio test
*#*#0842#*#* Vibration and Backlight test
*#*#2663#*#* Displays touch-screen version
*#*#2664#*#* Touch-Screen test
*#9090# Diagnostic configuration
*#872564# USB logging control
*#301279# HSDPA/HSUPA Control Menu
*2767*3855# Format device to factory state
*#9900# System dump mode
*#*#7780#*#* Reset the /data partition to factory state
*#7465625# Access phone lock status
*#12580*369# Software and hardware details
*#*#0588#*#* Proximity sensor test
*#*#3264#*#* Ram version
*#*#232331#*#* Bluetooth test
*#*#7262626#*#* Field test
*#*#232337#*# Displays bluetooth device address
*#*#8255#*#* For Google Talk service monitoring
*#*#4986*2650468#*#* PDA, Phone, Hardware, RF Call Date firmware info
*#*#1234#*#* PDA and Phone firmware info
*#*#1111#*#* FTA Software version
*#*#2222#*#* FTA Hardware verion
*#*#44336#*#* Displays Build time and change list number
*#06# Displsys IMEI number
*#*#8351#*#* Enables voice dialing logging mode
*#*#8350#*#* Disables voice dialing logging mode
##778 (+call) Brings up Epst menu

Other codes for mobile phone (some models not set)
*#*#4636#*#*Information about Phone, Battery and Usage statistics.
*#*#7780#*#*Restting your phone to factory-Only deletes application data and applications.
*2767*3855#It’s a complete wiping of your mobile also it reinstalls the phones firmware.
*#*#34971539#*#*Shows completes information about the camera.
*#*#7594#*#*Changing the power button behavior-Enables direct poweroff once the code enabled.
*#*#273283*255*663282*#*#*Quick backup to all your media files.
*#*#197328640#*#*Enabling test mode for service activity.
*#*#232339#*#* OR *#*#526#*#*Wireless Lan Tests.
*#*#232338#*#*Wi-Fi Mac-address.
*#*#1472365#*#*Quick GPS test.
*#*#1575#*#*A Different type GPS test.
*#*#0283#*#*Packet Loopback test.
*#*#0*#*#*LCD test.
*#*#0673#*#* OR *#*#0289#*#*Audio test.
*#*#0842#*#*Vibration and Backlight test.
*#*#2663#*#*Displays touch-screen version.
*#*#2664#*#*Touch-Screen test.
*#*#0588#*#*Proximity sensor test.
*#*#3264#*#*Ram version.
*#*#232331#*#*Bluetooth test.
*#*#7262626#*#*Field test.
*#*#232337#*#Displays bluetooth address.
##778 (+call) Brings up Epst menu.
*#*#4986*2650468#*#*PDA, Phone, Hardware, RF Call Date firmware info.
*#*#1234#*#*PDA and Phone firmware info.
*#*#1111#*#*FTA Software version.
*#*#2222#*#*FTA Hardware verion.
*#*#44336#*#*Displays Build time and change list number.
*#06#Displsys IMEI numbers.
*#*#8351#*#*Enables voice dialing logging mode.
*#*#8350#*#*Disables voice dialing logging mode.
Codes for Chinese Mobile Phones
Enter into Engineering Mode *#110*01#
Restore Factory Settings *#987*99#
Enter into Factory Mode *#987#
Default User Codes 1122, 3344, 1234, 5678
Check Software Version *#900# OR *#800#
Change LCD Contrast *#369#
Set Default Language *#0000#
Set Language to English *#0044#
To Enable COM Port *#110*01# -> Device -> Set UART -> PS Config -> UART1/115200

*#002# – Full Factory Reset.

*#87# or *#88# – Phone Test.

*#06# – Shows IMEI of Mobile Phone.

*#8375# or *#8376# – Software/Hardware Info.

*#3641# – Engineer Mode.

*#3696# – Firmware USB Update Mode.

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