Huawei P20 secret codes

OS: Android 8.1 (Oreo), upgradable to Android 9.0 (Pie); EMUI 8.1

CPU: Octa-core (4x2.4 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53)

Display: 5.8" inc

Camera: 12 MP, Dual

Huawei P20 smartphone runs on Android 8.1 (Oreo), upgradable to Android 9.0 (Pie); EMUI 8.1 operating system. The phone is powered by Octa-core (4x2.4 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53) processor. It has 128 GB, 4 GB RAM. Internal storage options which can be extended with the help of No. The smartphone has a LTPS IPS LCD providing, Screen-to-Body Ratio of 80.4%. The smartphone is fueled with a 3400 mAh, Non-removable Li-Po. The main camera of the smartphone consists of a 12 MP, Dual. The sensors include Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum. Connectivity features in the smartphone include Bluetooth, A-GPS, GLONASS, GALILEO, Wi-Fi, NFC and more. The Huawei P20 are available in various colors such as Twilight, Black, Midnight Blue, Pink Gold. It measures 149.1 x 70.8 x 7.7 mm and weighs 165 g.

Secret codes for Huawei P20

*#06#	- IMEI number is a unique identification that all mobile phones have
##2846579## or ##2846579159##	- Engineering Mode
##3646633## or ##54298##	- Engineering Mode (for smartphones based on MTK processor)
##4636##	- This code can be used to get some interesting information about Huawei P20 (Phone, Battery, WiFi and other)
##225##	- This code show the number of festivities and events in your calendar
##426##	- Google Play services's debug informations
*#0011#	- ServiceMode
*#0808#	- Change USB Settings
*#9900#	- Dump mode
*#9090#	- Diagnostic configuration
#0#	- General Test Mode
*#2663#	- TSP / TSK firmware update
#12580369#	- Software and hardware info
*#0283#	- Audio Loopback Control
#7465625638#	- Insert Network Lock Key Code
##759##	- Rlz Debug UI. Unique Device ID, PID, ACAP
##36245##	- Debug email in apps/Email
##8255##	- To launch Google Talk service monitor
##64663##	- Check Hardware (Version, Sensors, Battery, Radio, Speakers)
##7780##	- Factory Data Reset (all phone data will be erased).
27673855#	- The firmware of the device is completely reinstalled
##232338##	- Wi-Fi Mac Address Information
##34971539## or *#34971539#	- Full information about the camera.
##1234##	- PDA and Phone firmware info
##7594##	- Changing the power button behavior-Enables direct poweroff once the code enabled
##1472365##	- For a quick GPS test
##273283255663282##*	- For a quick backup to all your media files
##1575##	- Advanced GPS test
##197328640##	- Enabling test mode for service activity
##0283##	- Packet Loopback test
*#0228#	- battery calibration

##232339## OR ##526##	- Wireless Lan Tests
##0##*	- Mobile phone LCD test
##3264##	- Ram version
##1111##	- FTA Software version
##2664##	- Touch-Screen test
##0588##	- Open the proximity test
##8351##	- Enables voice dialing logging mode
##232331##	- Bluetooth test
##232337#*#	- Displays Bluetooth address
##7262626##	- Field test
##0289## OR ##0673##	- Audio test
##0842##	- Backlight/vibration test
##2663##	- The displays touch-screen version of Android device
##44336##	- Displays Build time and change list number
##49862650468##*	- PDA, Phone, Hardware, RF Call Date firmware info
##8350##	- Disables voice dialing logging mode
##2222##	- FTA Hardware verion

GSM codes for Huawei P20

Change code
*03old codenew codenew code#
- Change code for call barring
*04old PIN codenew PIN new PIN#
- Change SIM Card PIN code
*042old PIN2 codenew PIN2new PIN2#
- Change SIM Card PIN2 code
*05PUK codenew PUKnew PUK#
- Change SIM Card PUK code
*052PUK2 codenew PUK2new PUK2#
- Change SIM Card PUK2 code

Configure Call waiting
*43#	- �all waiting Activate
#43#	- �all waiting Deactivate
*#43#	- Check status of call waiting

Call Forwarding
##002#	- Disable All Call Forwarding
*004PhoneNumber#	- Set all configured call diversions to PhoneNumber
##004#	- Unregister all configured call diversions

GSM codes for Call Forward All
21PhoneNumber#	- Register and activate divert all calls to PhoneNumber
##21#	- Unregister divert all calls
*21#	- To turn Divert On for all calls
#21#	- To turn Divert OFF for all calls
*#21#	- Check status of divert all calls

Set up call diversion in case of "no answer"
*61PhoneNumber#	- Register and activate divert on no answer to PhoneNumber
##61#	- Unregister divert on no answer
*61#	- Divert on no answer calls Activate
#61#	- Divert on no answer calls Deactivate
*#61#	- Check status of divert on no answer

Set call forwarding in case of "not available"
*62PhoneNumber#	- Register and activate divert on not reachable
##62#	- Unregister divert on not reachable
*62#	- Activate divert on not reachable
#62#	- Deactivate divert on not reachable
*#62#	- Check status of divert on not reachable

Call forwarding in case of "busy"
*67PhoneNumber#	- Register and activate divert on busy
##67#	- Unregister divert on busy
*67#	- Activate divert on busy
#67#	- Deactivate divert on busy
*#67#	- Check status of divert on busy all call types
#6711#	- Check status of divert on busy voice calls
#6713#	- Check status of divert on busy fax calls
#6725#	- Check status of divert on busy data calls

Blocking all outgoing calls
*33code#	- Activate barr all outgoing calls (for code see "Safety" above)
#33*code#	- Deactivate barr all outgoing calls
*#33#	- Check status of barr all outgoing calls

Barr all calls
*330code#	- Enable Barr all calls on your phone
#330*code#	- Disable Barr all calls on your phone
#330code#	- Check status of barr all calls

Set barring of all outgoing international calls
*331code#	- Activate barr all outgoing international calls
#331*code#	- Deactivate Barr all outgoing international calls
#331code#	- Check status of barr all outgoing international calls

USSD Codes For Barring all outgoing international calls except home country
*332code#	- To turn Barring On for all outgoing international calls except home country
#332*code#	- To turn Barring OFF for all outgoing international calls except home country
#332code#	- Check status of barr all outgoing international calls except home country

Barr all outgoing calls
*333code#	- Activate barr all outgoing calls
#333*code#	- Deactivate Barr all outgoing calls
*#333#	- Check status of barr all outgoing calls

Blocking all incoming calls
*35code#	- Enable Barr all incoming calls on your phone
#35*code#	- Disable Barr all incoming calls on your phone
*#35#	- Check status of barr all incoming calls

Barr all incoming calls when roaming
*351code#	- Enable Barr all incoming calls when roaming on your phone
#351*code#	- Disable Barr all incoming calls when roaming on your phone
*#351#	- Check status of barr all incoming calls when roaming

Set barring of all incoming calls
*353code#	- Blocking all incoming calls Activate
#353*code#	- Block all incoming calls Deactivate
*#353#	- Check status of Blocking all incoming calls

Thomas Nilan
Smartphone Expert

Thomas Nilan is a mobile phone expert with in-depth knowledge of the Android and iOS operating systems, who understands the settings of various hidden features that allow you to expand the capabilities of your smartphone, as well as get information about what is going on inside the phone for future repairs. He is an authority in his field, which has allowed him to become a ghostwriter for several technology publications, and he enjoys writing small mobile applications for testing smartphones.

User questions and comments about secret codes Huawei P20

	Hus-Vaqymc	March 30, 2024
	The camera quality is impressive with great image processing capabilities and various shooting modes. The battery life is decent with fast charging. The design is sleek and premium. Great value for money.
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