| Specification Tecno Spark 4 Air |
| Hard reset Tecno Spark 4 Air |
| Root Tecno Spark 4 Air |
| Unlock Tecno Spark 4 Air |
| Firmware Tecno Spark 4 Air |
| Developer Mode Tecno Spark 4 Air |
| Bypass Lock Screen Tecno Spark 4 Air |
| Tecno Spark 4 Air Factory Reset |
| Bypass FRP Tecno Spark 4 Air |
| Screenshot Tecno Spark 4 Air |
|
OS: Android v9.0 (Pie) CPU: Quad core, 2 GHz, Cortex A53 RAM: 3 GB Display: 6.1 inches (15.49 cm) Battery: 3000 mAh |
| *#06# | - IMEI (International Mobile Equipment Identity) number |
| *#*#3646633#*#* or *#*#54298#*#* | - Engineering Mode (for smartphones based on MTK processor) |
| *#*#4636#*#* | - Hidden Android 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#*#* | - Access to Rlz Debug Ul |
| *#*#36245#*#* | - Email debug information |
| *#*#8255#*#* | - For Google Talk service monitoring |
| *#*#64663#*#* | - Used to launch Hardware Test |
| *#*#7780#*#* | - Return to factory setting. |
| *2767*3855# | - Full reset |
| *#*#232338#*#* | - Displays Wi-Fi Mac-address |
| *#*#34971539#*#* or *#34971539# | - Show 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 |
| *#*#3264#*#* | - Tecno Spark 4 Air Ram version |
| *#*#1111#*#* | - FTA Software version |
| *#*#2664#*#* | - Touch-Screen test |
| *#*#0588#*#* | - Proximity sensor test |
| *#*#8351#*#* | - Enables voice dialing logging mode |
| *#*#232331#*#* | - Troubleshoot your Bluetooth |
| *#*#232337#*# | - Displays Bluetooth address |
| *#*#7262626#*#* | - Field test |
| *#*#0289#*#* OR *#*#0673#*#* | - Audio test |
| *#*#0842#*#* | - Vibration test and BackLight test |
| *#*#2663#*#* | - Touch-screen version Tecno Spark 4 Air |
| *#*#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 |
| 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# | - Activation Divert all calls |
| #21# | - Deactivate Divert all calls |
| *#21# | - Check status of divert all calls |
| Configure 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# | - 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 |
| Activate barr 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 |
| GSM codes for barring all outgoing international calls | |
| **331*code# | - Activate all outgoing international calls barring |
| #331*code# | - Deactivate all outgoing international calls barring |
| *#331*code# | - Check status of barr all outgoing international calls |
| Set barring of all outgoing international calls except home country | |
| **332*code# | - Activation Barr all outgoing international calls except home country |
| #332*code# | - Deactivate 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# | - Activate all outgoing calls barring |
| #333*code# | - Deactivate all outgoing calls barring |
| *#333# | - Check status of barr all outgoing calls |
| Activate barr 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 |
| GSM codes for barring 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. | |
 | Tadele Betela | March 17, 2022 |
| Why my phone does not receiving and only missed but not showing the number:: | ||
| Reply | ||
| Gilbert | December 10, 2022 |
| How do I get free data for my TECNO SPARK 4 | ||
| Reply | ||
| Davucup | March 09, 2024 |
| The phone has a sleek design and decent build quality. The screen is vibrant and responsive. Performance is smooth, but camera quality could be better. Battery life is average. Overall, it's a good value for the price. | ||
| Reply | ||
