Xiaomi Mi Max 4 secret codes

OS: Android 9.0 (Pie), MIUI 11

CPU: Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)

Display: 7.2 inches, 128.3 cm²

Xiaomi Mi Max 4 smartphone runs on Android 9.0 (Pie), MIUI 11 operating system. The phone is powered by Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) processor. It has 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM. Internal storage options which can be extended with the help of microSDXC (uses shared SIM slot). The smartphone has a IPS LCD providing. The sensors include Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass. Connectivity features in the smartphone include Bluetooth, A-GPS, GLONASS, BDS, 3.5 mm Jack and more. The Xiaomi Mi Max 4 are available in various colors such as Black, Champagne Gold, Blue.

Secret codes for Xiaomi Mi Max 4

*#06#	- IMEI (International Mobile Equipment Identity) number
##3646633## or ##54298##	- Engineering Mode (for smartphones based on MTK processor)
##4636##	- Testing menu only have Phone Information, Usage Statistics and Wi-Fi information.
##225##	- Calendar Storage, check your events in calendar
##426##	- This code show Google Play
*#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. Access Google Partner setup
##36245##	- Email debug information
##8255##	- Access GTalk Service Monitor
##64663##	- Access Hardware Test (Sensors, Bluetooth, Battery, Speakers)
##7780##	- Reset mobile phone to factory settings.
27673855#	- Complete wiping of your mobile
##232338##	- Displays Wi-Fi Mac-address
##34971539## or *#34971539#	- See camera information.
##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##	- Another GPS test
##197328640##	- Enabling test mode for service activity
##0283##	- Packet Loopback test
*#0228#	- battery calibration

##232339## OR ##526##	- Wireless Lan Tests
##0##*	- LCD display test Code
##3264##	- See Ram version
##1111##	- FTA Software version
##2664##	- Touch-Screen test
##0588##	- Proximity sensor test
##8351##	- Enables voice dialing logging mode
##232331##	- Bluetooth Test Mode
##232337#*#	- Check Bluetooth device address
##7262626##	- Field test
##0289## OR ##0673##	- Audio test
##0842##	- Check Backlight and Vibration
##2663##	- This code for touch screen version
##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 Xiaomi Mi Max 4

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

Call waiting
*43#	- To turn Call Waiting On for all calls
#43#	- To turn Call Waiting OFF for all calls
*#43#	- Check status of call waiting

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

USSD Codes For Call Forward All
21PhoneNumber#	- Register and activate divert all calls to PhoneNumber
##21#	- Unregister divert all calls
*21#	- Divert all calls is turned ON
#21#	- Divert all calls is turned OFF
*#21#	- Check status of divert all calls

Configure call diversion in case of "no answer"
*61PhoneNumber#	- Register and activate divert on no answer to PhoneNumber
##61#	- Unregister divert on no answer
*61#	- To turn Divert On no answer calls
#61#	- To turn Divert OFF for no answer calls
*#61#	- Check status of divert on no answer

Call diversion when "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

Diversion 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

All outgoing calls barring
*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

Set barring of all calls
*330code#	- Activate all calls barring
#330*code#	- Deactivate all calls barring
#330code#	- Check status of barr all calls

Codes for barring all outgoing international calls
*331code#	- Turn On Barr all outgoing international calls
#331*code#	- Turn OFF Barr all outgoing international calls
#331code#	- Check status of barr all outgoing international calls

Activate barr all outgoing international calls except home country
*332code#	- Barr all outgoing international calls except home country is turned ON
#332*code#	- Barr all outgoing international calls except home country is turned OFF
#332code#	- Check status of barr all outgoing international calls except home country

Set barring of all outgoing calls
*333code#	- Turn On Barr all outgoing calls
#333*code#	- Turn OFF Barr all outgoing calls
*#333#	- Check status of barr all outgoing calls

All incoming calls barring
*35code#	- Activate all incoming calls barring
#35*code#	- Deactivate all incoming calls barring
*#35#	- Check status of barr all incoming calls

Set barring of all incoming calls when roaming
*351code#	- Activate all incoming calls when roaming barring
#351*code#	- Deactivate all incoming calls when roaming barring
*#351#	- Check status of barr all incoming calls when roaming

Codes for barring all incoming calls
*353code#	- To turn Block On for all incoming calls
#353*code#	- To turn Block OFF for all incoming calls
*#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 Xiaomi Mi Max 4

	LyqZaqe	March 20, 2024
	The camera quality is impressive, with excellent image processing and various shooting modes. The battery life is decent, with fast charging. The functionality and performance are top-notch. The screen is vibrant and protected. The software is user-friendly. Call quality is good. The cost is reasonable. Overall, a great device.
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