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S-TELL M621 secret codes


 Specification S-TELL M621 
 Root S-TELL M621 
 Unlock S-TELL M621 
 Firmware S-TELL M621 
 Developer Mode S-TELL M621 
 Bypass Lock Screen S-TELL M621 
 S-TELL M621 Factory Reset 
 Screenshot S-TELL M621 

S-TELL M621


OS: Android 6.0

CPU: MediaTek MT6580, 1300 MHz
RAM: 2 GB
Display: 5"
Camera: 13 MP
Battery: 2350 mAв‹…h




S-TELL M621 smartphone runs on Android 6.0 operating system. The phone is powered by MediaTek MT6580, 1300 MHz processor. It has 2 GB. Internal storage options which can be extended with the help of yes, separate. The smartphone has a colored IPS, 16.78 mln colors, sensor providing. The smartphone is fueled with a 2350 mAв‹…h. The main camera of the smartphone consists of a 13 MP. The sensors include approaching sensor. Connectivity features in the smartphone include, 3.5 mm Jack and more. It measures 145 x 72 x 9 mm and weighs 180 grams.

Secret codes for S-TELL M621

*#06#- IMEI (International Mobile Equipment Identity) number
*#*#3646633#*#* or *#*#54298#*#*- Engineering Mode (for smartphones based on MTK processor)
*#*#4636#*#*- Open testing menu (Phone, Battery, WiFi and other)
*#*#225#*#*- Shows you everything that is saved on your Calendar such as Events, Holidays, Trips, Birthdays, Anniversary
*#*#426#*#*- Google Play services android.
*#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#*#*- RLZ Debug UI (Device ID, Activation Status and few other things
*#*#36245#*#*- Email debug information
*#*#8255#*#*- This code can be used to launch Google Talk Service Monitor
*#*#64663#*#*- Used to launch Hardware Test
*#*#7780#*#*- Reset to factory settings.
*2767*3855#- Full reset
*#*#232338#*#*- Displays Wi-Fi Mac-address
*#*#34971539#*#* or *#34971539#- 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#*#*- GPS Test Code
*#*#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#*#*- S-TELL M621 Ram version
*#*#1111#*#*- FTA Software version
*#*#2664#*#*- Touch-Screen test
*#*#0588#*#*- Proximity sensor test
*#*#8351#*#*- Enables voice dialing logging mode
*#*#232331#*#*- Show Bluetooth Test Mode
*#*#232337#*#- Displays Bluetooth address
*#*#7262626#*#*- Field test
*#*#0289#*#* OR *#*#0673#*#*- Audio test
*#*#0842#*#*- Backlight and Vibration test
*#*#2663#*#*- Touch-screen 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 S-TELL M621



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#- Activation call waiting
#43#- Deactivation call waiting
*#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
Call Forward All
*21*PhoneNumber#- Register and activate divert all calls to PhoneNumber
##21#- Unregister divert all calls
*21#- Enable divert all calls
#21#- Disable divert all calls
*#21#- Check status of divert all calls
Divert calls if your line is "no answer"
**61*PhoneNumber#- Register and activate divert on no answer to PhoneNumber
##61#- Unregister divert on no answer
*61#- Activation Divert on no answer calls
#61#- Deactivate divert on no answer calls
*#61#- Check status of divert on no answer
Set up call diversion 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
USSD 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
GSM codes for barring all calls
**330*code#- To turn Barring On for all calls
#330*code#- To turn Barring OFF for all calls
*#330*code#- Check status of barr all calls
Block all outgoing international calls
**331*code#- Enable Barr all outgoing international calls on your phone
#331*code#- Disable Barr all outgoing international calls on your phone
*#331*code#- Check status of barr all outgoing international calls
Set barring of all outgoing international calls except home country
**332*code#- Enable barr all outgoing international calls except home country
#332*code#- Disable Barr all outgoing international calls except home country
*#332*code#- Check status of barr all outgoing international calls except home country
GSM codes for barring all outgoing calls
**333*code#- Enable Barr all outgoing calls on your phone
#333*code#- Disable Barr all outgoing calls on your phone
*#333#- Check status of barr all outgoing calls
USSD Codes For Barring all incoming calls
**35*code#- To turn Barring On for all incoming calls
#35*code#- To turn Barring OFF for all incoming calls
*#35#- Check status of barr all incoming calls
GSM codes for barring all incoming calls when roaming
**351*code#- To turn Barring On for all incoming calls when roaming
#351*code#- To turn Barring OFF for all incoming calls when roaming
*#351#- Check status of barr all incoming calls when roaming
Block all incoming calls
**353*code#- Activation Blocking all incoming calls
#353*code#- Deactivate Block 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 S-TELL M621



userVclipvMarch 19, 2024
The battery life is decent, but the charging speed could be faster. The functionality is good with a variety of features. The design is sleek and the screen is vibrant. Performance is smooth and the camera quality is impressive. The cost is reasonable for the specs offered. Overall, a solid device with some room for improvement.
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