[OnePlus X General] shsaifee:
I found this one if it helps:

*#06# - IMEI number IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to all cellular devices. If your mobile phone is stolen, you can call or go to the nearest service center of your mobile network and give that IMEI number to staff to block your phone.

*#*#273282*255*663282*#*#* - Immediate backup of all media files

*#*#4636#*#*

This code can be used to get some interesting information about your phone and battery. It shows following 4 menus on screen:

* Phone information

* Battery information

* Battery history

* Usage statistics

*#*#7780#*#*

This code can be used for a factory data reset. It'll remove following things:

* Google account settings stored in your phone

* System and application data and settings

* Downloaded applications

It'll NOT remove:

* Current system software and bundled applications

* SD card files e.g. photos, music files, etc.

PS: Once you give this code, you get a prompt screen asking you to click on "Reset phone" button. So you get a chance to cancel your operation.

*2767*3855# - Think before you give this code. This code is used for factory format. It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.

PS: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.

*#*#34971539#*#* - This code is used to get information about phone camera. It shows following 4 menus:

* Update camera firmware in image (Don't try this option)

* Update camera firmware in SD card

* Get camera firmware version

* Get firmware update count

WARNING: Never use the first option otherwise your phone camera will stop working and you'll need to take your phone to service center to reinstall camera firmware.

*#*#7594#*#*

This one is favorite one. This code can be used to change the "End Call / Power" button action in your phone. Be default, if you long press the button, it shows a screen asking you to select any option from Silent mode, Airplane mode and Power off.

You can change this action using this code. You can enable direct power off on this button so you don't need to waste your time in selecting the option.

*#*#225#*#* - Events calendar.

*#*#426#*#* - Debug information for Google Play service.Google Play Services first appeared in 2012. In its initial version, it provided a way to access the Google+ API and OAuth 2.0. From those humble beginnings, it has spread to work with a variety of different Google services, allowing apps to communicate with them. Google Play Services is how other apps can access all the different Google APIs.

*#*#759#*#* - Access Google Partner setup (Rlz debug interface).

*#872564# - USB logging control

*#9900# - System dump mode

*#*#97#*#* - Language and Keyboard settings

*#*#46*#*# - Reset Sim

*#301279# - HSDPA means High Speed Downlink Packet Access

*#7465625# - View phone lock status

*#*#273283*255*663282*#*#* - This code opens a File copy screen where you can backup your media files e.g. Images, Sound, Video and Voice memo.

*#*#197328640#*#* - This code can be used to enter into Service mode. You can run various tests and change settings in the service mode.

WLAN, GPS and Bluetooth Test Codes:

*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use "Menu" button to start various tests)

*#*#232338#*#* - Shows WiFi MAC address

*#*#1472365#*#* - GPS

The Global Positioning System (GPS) is a space-based navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. test

*#*#1575#*#* - For a more advanced GPS test

*#*#232331#*#* - Bluetooth test

*#*#232337#*# - Shows Bluetooth device address

*#*#8255#*#* - This code can be used to launch GTalk Service Monitor.

Gtalk Service Monitor and play services monitor are developer options to let you examine and debug the push connections to google talk and google play services. Below these, the "restore default heartbeats" button lets you bring back the original heartbeat exchange settings if you have to. The final button is about making a donation to the developer of this convenient app. and that is it! now, you are left to experiment with the data and wi-fi settings until you land the most comfortable intervals for you.

*#*#36245#*#* - Access email debug information.

Codes to get Firmware version information:

*#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate

*#*#1234#*#* OR *#1234# - PDA and Phone firmware information

*#*#1111#*#* - FTA SW Version (1234 in the same code will give PDA and firmware version)

*#12580*369# - Software and hardware info

*#9090# - Diagnostic configuration

*#*#2222#*#* - FTA HW Version

*#*#44336#*#* - PDA, Phone, CSC

The Customer Service Code (CSC) plays an important role in the operation of your Samsung mobile device. Different countries have different standards for both voice and data communications to a cell phone tower. Although most countries follow the international standard for WiFi connects, there are variations from the standard. The CSC code ensures that your mobile device complies with the standards for your country, and your cell phone operator. The CSC code also determines the source for firmware updates via FOTA or Samsung Kies., Build Time, Changelist number

Codes to launch various Factory Tests:

*#*#0283#*#* - Packet Loopback

*#*#0*#*#* - LCD display test

*#*#0673#*#* OR *#*#0289#*#* - Melody test

*#*#0842#*#* - Device test (Vibration test and BackLight test)

*#*#2663#*#* - Touch screen version

*#*#2664#*#* - Touch screen test

*#*#0588#*#* - Proximity sensor test

*#*#3264#*#* - RAM version

Change PIN

For security, you can require a PIN code in order to use your SIM card in any device. This PIN code follows the SIM card from one device to another. A personal unblocking code (PUC), also known as a PIN unlock key (PUK), is used in 3GPP mobile phones to reset a personal identification number (PIN) that has been lost or forgotten. - ** 04 *, then enter the PIN old, and twice a new PIN.

Change PIN2 - ** 042 *, then enter the old The PIN2, and twice the new PIN2.

Unlock SIM-card (PIN) - ** 05 * then enter the PUK and new PIN twice

Unlock SIM-card (PIN2) - ** 052 *, then enter the PUK2 and new PIN2 twice

Call Forwarding (you have to order the service from the operator)

##002# - Cancel all diverts

##004# - Cancel all conditional call forwarding

**004* phone number # - Activate all conditional call forwarding

Unconditional call forwarding (Call Forward All)

###21 - Switch off and deactivate

#21# - Deactivate

**21*phone number# - Enable and Activate

*21# - Activate

*#21# - Check the condition

Diversion in case of "no answer"

###61 - Switch off and deactivate

#61# - Deactivate

**61* phone number# - Enable and Activate

*61# - Activate

*#61# - Check the condition

Setting the call time until the call forwarding option "no answer"

When installing forwarding on "no answer" you can set the time in seconds that the system allows you to hook. If during this time you have not picked up the phone, the incoming call will be diverted.

Example: - ** 61 * + ** 709576617601234 # 30 - set the waiting time of 30 seconds

Set timeout - ** 61 * Phone Number ** N #, N = 5..30 (seconds)

Remove the previous installation - ## 61 #

Diversion in case of "not available"

# ## 62 - Switch off and deactivate

# 62 # - Deactivate

** 62 *phone number# - Enable and Activate

* 62 # - Activate

* # 62 # - Check the condition

Diversion in case of "busy"

###67 - Switch off and deactivate

#67# - Deactivate

**67*phone number# - Enable and Activate

*67# - Activate

*#67# - Check the condition

Call Barring (you have to order the service from the operator)

Change the password for all bans (default - 0000)

- ** 03 * 330 * old password * new password * new password #

Barring of all outgoing calls

**33*password# - Activate

#33*password# - Deactivate

*#33# - Check the condition

Barring of all calls

**330*password# - Activate

#330*password# - Deactivate

*#330# - Check the condition

Barring of all outgoing international calls

**331*password# - Activate

#331*password# - Deactivate

*#331# - Check the condition

Barring of all outgoing calls

**333*password# - Activate

#333*password# - Deactivate

*#333# - Check the condition

Barring of all incoming calls

**353*password# - Activate

#353*password# - Deactivate

*#353# - Check the condition

Barring all incoming calls when roaming

**351*password# - Activate

#351*password# - Deactivate

*#351# - Check the condition

Call waiting (you have to order the service from the operator)

*43# - Activate

#43# - Deactivate

*#43# - Check the condition

Transfer your phone number (Anti ANI)

#30#phone number - Block

*30#phone number - Allow

*#30# - Check the condition

Show phone number of the caller you (ANI)

#77# - Block

*77# - Allow

*#77# - Check the condition

Smart menu

GP - *111#

Rob - *140#

Banglalink - *789#