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Secret codes for ZTE Nubia Z20

  Mobiles >> ZTE >> ZTE Nubia Z20

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Hard Reset

ZTE secret codes

*#06# - IMEI (International Mobile Equipment Identity) number
Engineering Mode
*#*#2486#*#*

Version.
Type *983*7469#

Battery Temperature.
Type *983*1688#

Keypad Test.
Type *983*5391#

Phone Reset / User Code Reset.
Type *983*5651#

Sim Lock Info.
Type *983*757#

Master Reset.
Type *983*22387#

Audio Test.
Type *983*2831#

Version Info.
Type *983*837#

ANDROID ZTE secret codes for ZTE Nubia Z20

*#*#4636#*#* - Displaying Phone Information ZTE Nubia Z20. 4 menus will appear on the phone screen: (Phone information, Battery information, Battery history, Usage statistics)

*#*#225#*#* - Event calendar

*#*#426#*#* - Check the connectivity between the FCM server and the mobile devices

*#*#759#*#* - RLZ debug interface



*#*#36245#*#* - Access Email debug info

*#*#8255#*#* - Google Talk Service Monitor in Android mobile phones will monitor Google Talk host address and port, your Google JID, your device ID, GTalk connection status, your connection history

*#*#64663#*#* - Access Hardware Test (Sensors, Bluetooth, Battery, Speakers)

*#2886# - Factory Auto Testing

*#*#273282*255*663282*#*#* OR *#*#273283*255*663282*#*#* - Create backup to all media files

*#*#7780#*#* - Factory Data Reset (all phone data will be erased). It'll remove following things: (Downloaded applications, Google account, all data and settings)

*2767*3855# - This code is used for factory format.



*#*#7594#*#* - Changing the power button behavior-Enables direct poweroff once the code enabled

*#*#34971539#*#* - This code is to retrieve information about the phone camera.

*#*#97#*#* - Language and Keyboard settings in ZTE Nubia Z20

*#872564# - USB logging control

*#301279# - HSDPA/HDUPA connection settings menu

*#9900# - System dump mode ZTE Nubia Z20

*#*#46*#*# - Reset Sim in ZTE Nubia Z20

*#*#197328640#*#* - Enter service mode to run various tests and change settings




WLAN, GPS and Bluetooth Test Codes:

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

*#*#232338#*#* - Wi-Fi Mac Address

*#*#1472365#*#* - GPS test

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

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

*#*#232337#*# - Shows Bluetooth device address in ZTE Nubia Z20

GSM codes for ZTE Nubia Z20

Change PIN code - **04* and enter the old PIN code, and twice a new PIN code.
Change PIN2 code - **042* and enter the old PIN2 code, and twice the new PIN2 code.
Unlock SIM (PIN) - **05* and enter the PUK code and new PIN code twice
Unlock SIM (PIN2) - **052* and enter the PUK2 code and new PIN2 code twice

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

##002#	Cancelling all call forwarding
##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

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 #

Block all outgoing calls on your phone
**33*(enter password)#@ - To Activate
#33*(enter password)#@ - To Cancel
*#33#@ - Check Status

Block calls
*330*(enter password)# - To Activate
#330*(enter password)# - To Cancel
*#330# - Check Status

How to bar all outgoing international calls
*331*(enter password)# - To Activate
#331*(enter password)# - To Cancel
*#331# - Check Status

Block all outgoing international calls on your phone when roaming
*332*(enter password)# - To Activate
#332*(enter password)# - To Cancel
*#332# - Check Status

Barring of all outgoing calls on your phone
*333*(enter password)# - To Activate
#333*(enter password)# - To Cancel
*#333# - Check Status

Block all incoming calls on your phone
*353*(enter password)# - To Activate
#353*(enter password)# - To Cancel
*#353# - Check Status

Block incoming calls when roaming
*351*(enter password)# - To Activate
#351*(enter password)# - To Cancel
*#351# - Check Status

Call waiting (you have to order the service from the operator)
*43# - To Activate
#43# - To Cancel
*#43# - Check Status

Transfer your phone number (Anti ANI)
#30#phone number - Block
*30#phone number - Allow
*#30# - Check Status

Show phone number of the caller you (ANI)
#77# - Block
*77# - Allow
*#77# - Check Status

Proceed with Caution: Use codes with care, as incorrect usage could affect device functionality.

If you're unsure about a code, do not use it. It's better to be safe than sorry.

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Tarik Tonkov Mobile technology specialist

Tarik Tonkov is a computer scientist and programmer turned tech journalist with a keen interest in the world of smartphones and tablets. He previously wrote for Android Life and was also a ghostwriter for several technology and automotive publications. He appreciates the reliability and beauty of smartphones, the symbiosis of characteristics and usability. In his free time, Tarik likes to travel by car and polish his programming skills to create small useful programs.

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