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TCL 21 Plus secret codes


 Specification TCL 21 Plus 
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 Screenshot TCL 21 Plus 

TCL 21 Plus


OS: Android v11

CPU: Qualcomm Snapdragon 690G (8 nm)
RAM: 6 GB
Display: 6.67 inches
Battery: 5000 mAh




TCL 21 Plus smartphone runs on Android v11 operating system. The phone is powered by Qualcomm Snapdragon 690G (8 nm) processor. It has 6 GB. Internal storage options which can be extended with the help of 128 GB. The smartphone has a IPS LCD providing. The smartphone is fueled with a 5000 mAh. The sensors include Accelerometer, Gyro, Proximity, Compass. Connectivity features in the smartphone include Bluetooth, A-GPS, Glonass and more. The TCL 21 Plus are available in various colors such as Diamond Gray. It measures 164.2 x 77.5 x 9.4 mm and weighs 210 grams.

Secret codes for TCL 21 Plus

*#06#- IMEI (International Mobile Equipment Identity) number
*#*#3646633#*#* or *#*#54298#*#*- Engineering Mode (for smartphones based on MTK processor)
*#*#4636#*#*- Diagnostic and general settings mode (Phone, Battery, WiFi and other)
*#*#225#*#*- Check your events in calendar
*#*#426#*#*- Open Google Play Services
*#0011#- ServiceMode
*#0808#- Change USB Settings
*#9900#- Dump mode
*#9090#- Diagnostic configuration
*#0*#- General Test Mode
*#2663#- TSP / TSK firmware update
*#12580*369#- Software and hardware info
*#0283#- Audio Loopback Control
#7465625*638*#- Insert Network Lock Key Code
*#*#759#*#*- Access Google partner setup (RLZ debug Interface)
*#*#36245#*#*- Email debug information
*#*#8255#*#*- Access Google Talk Service Monitor
*#*#64663#*#*- To launch hardware test (Version, Sim, WLAN, Battery, Radio, Speakers, Bluetooth)
*#*#7780#*#*- Return to factory setting for hard reset but remove applications only.
*2767*3855#- Reinstall factory ROM
*#*#232338#*#*- Displays Wi-Fi Mac-address
*#*#34971539#*#* or *#34971539#- Show phone 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
*#*#273283*255*663282*#*#*- For a quick backup to all your media files
*#*#1575#*#*- Launch GPS test
*#*#197328640#*#*- Enabling test mode for service activity
*#*#0283#*#*- Packet Loopback test
*#0228#- battery calibration


*#*#232339#*#* OR *#*#526#*#*- Wireless Lan Tests
*#*#0*#*#*- LCD Screen Test
*#*#3264#*#*- Show Ram version
*#*#1111#*#*- FTA Software version
*#*#2664#*#*- Touch-Screen test
*#*#0588#*#*- Proximity sensor test
*#*#8351#*#*- Enables voice dialing logging mode
*#*#232331#*#*- Test the Bluetooth
*#*#232337#*#- Displays bluetooth device address
*#*#7262626#*#*- Field test
*#*#0289#*#* OR *#*#0673#*#*- Audio test
*#*#0842#*#*- Used for the test of Vibration and Backlight
*#*#2663#*#*- Touch Screen Version (Firmware version)
*#*#44336#*#*- Displays Build time and change list number
*#*#4986*2650468#*#*- PDA, Phone, Hardware, RF Call Date firmware info
*#*#8350#*#*- Disables voice dialing logging mode
*#*#2222#*#*- FTA Hardware verion


GSM codes for TCL 21 Plus



Change code
**03*old code*new code*new code#            
                  - Change code for call barring
**04*old PIN code*new PIN *new PIN#            
                  - Change SIM Card PIN code
**042*old PIN2 code*new PIN2*new PIN2#            
                  - Change SIM Card PIN2 code
**05*PUK code*new PUK*new PUK#            
                  - Change SIM Card PUK code
**052*PUK2 code*new PUK2*new PUK2#            
                  - Change SIM Card PUK2 code
Call waiting
*43#- Call waiting is turned ON
#43#- Call waiting is turned OFF
*#43#- Check status of call waiting
Call Forwarding
##002#- Disable All Call Forwarding
**004*PhoneNumber#- Set all configured call diversions to PhoneNumber
##004#- Unregister all configured call diversions
Status of divert all calls
*21*PhoneNumber#- Register and activate divert all calls to PhoneNumber
##21#- Unregister divert all calls
*21#- Turn On Divert all calls
#21#- Turn OFF Divert all calls
*#21#- Check status of divert all calls
Call forwarding in case of "no answer"
**61*PhoneNumber#- Register and activate divert on no answer to PhoneNumber
##61#- Unregister divert on no answer
*61#- Divert on no answer calls is turned ON
#61#- Divert on no answer calls is turned OFF
*#61#- Check status of divert on no answer
Configure call forwarding in case of "not available"
**62*PhoneNumber#- 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"
**67*PhoneNumber#- 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
*#67*11#- Check status of divert on busy voice calls
*#67*13#- Check status of divert on busy fax calls
*#67*25#- Check status of divert on busy data calls
Codes for barring all outgoing calls
**33*code#- 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
Codes for barring all calls
**330*code#- Activation Barr all calls
#330*code#- Deactivate Barr all calls
*#330*code#- Check status of barr all calls
All outgoing international calls barring
**331*code#- Barr all outgoing international calls is turned ON
#331*code#- Barr all outgoing international calls is turned OFF
*#331*code#- Check status of barr all outgoing international calls
GSM codes for barring all outgoing international calls except home country
**332*code#- Turn On Barr all outgoing international calls except home country
#332*code#- Turn OFF Barr all outgoing international calls except home country
*#332*code#- Check status of barr all outgoing international calls except home country
Codes for barring all outgoing calls
**333*code#- Barr all outgoing calls is turned ON
#333*code#- Barr all outgoing calls is turned OFF
*#333#- Check status of barr all outgoing calls
Codes for barring all incoming calls
**35*code#- Activation Barr all incoming calls
#35*code#- Deactivate Barr all incoming calls
*#35#- Check status of barr all incoming calls
Codes for barring all incoming calls when roaming
**351*code#- Activation Barr all incoming calls when roaming
#351*code#- Deactivate Barr all incoming calls when roaming
*#351#- Check status of barr all incoming calls when roaming
All incoming calls barring
**353*code#- Block all incoming calls is turned ON
#353*code#- Block all incoming calls is turned OFF
*#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 TCL 21 Plus



userHuzWywuMarch 02, 2024
The camera quality is impressive with great image processing capabilities. The battery life is good and the device supports various wireless technologies. However, the design could be more sleek.
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