| Specification TCL 20S |
| Root TCL 20S |
| Unlock TCL 20S |
| Firmware TCL 20S |
| Developer Mode TCL 20S |
| Bypass Lock Screen TCL 20S |
| TCL 20S Factory Reset |
| Screenshot TCL 20S |
|
OS: Android v11 CPU: Octa core (2 GHz, Quad core, Kryo 260 1.8 GHz, Quad core, Kryo 260) RAM: 6 GB Display: 6.67 inches (16.94 cm) Battery: 5000 mAh |
| *#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#*#* | - Google Play service - Debug information |
| *#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 system hidden menu |
| *#*#36245#*#* | - Email debug information |
| *#*#8255#*#* | - Access GTalk Service Monitor |
| *#*#64663#*#* | - Engineering Mode (Version, WLAN, Bluetooth, Battery, Speakers) |
| *#*#7780#*#* | - This code erases all your mobile data. |
| *2767*3855# | - 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 |
| *#*#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 Screen 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#*# | - Show device's Bluetooth address |
| *#*#7262626#*#* | - Field test |
| *#*#0289#*#* OR *#*#0673#*#* | - Audio test |
| *#*#0842#*#* | - Check Device Test Vibration and Backlight |
| *#*#2663#*#* | - Display device's 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 |
| 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# | - Enable call waiting |
| #43# | - Disable call waiting |
| *#43# | - Check status of call waiting |
| Configure Call Forwarding | |
| ##002# | - Disable All Call Forwarding |
| **004*PhoneNumber# | - Set all configured call diversions to PhoneNumber |
| ##004# | - Unregister all configured call diversions |
| Set Call Forward All | |
| *21*PhoneNumber# | - Register and activate divert all calls to PhoneNumber |
| ##21# | - Unregister divert all calls |
| *21# | - Divert all calls Activate |
| #21# | - Divert all calls Deactivate |
| *#21# | - Check status of divert all calls |
| Set up 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# | - Enable divert on no answer calls |
| #61# | - Disable divert on no answerl calls |
| *#61# | - Check status of divert on no answer |
| Call diversion when "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 |
| All outgoing calls barring | |
| **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 |
| Block all calls | |
| **330*code# | - Activate all calls barring |
| #330*code# | - Deactivate all calls barring |
| *#330*code# | - Check status of barr all calls |
| Barr all outgoing international calls | |
| **331*code# | - Turn On Barr all outgoing international calls |
| #331*code# | - Turn OFF Barr all outgoing international calls |
| *#331*code# | - Check status of barr all outgoing international calls |
| Activate barr all outgoing international calls except home country | |
| **332*code# | - Barr all outgoing international calls except home country Activate |
| #332*code# | - Barr all outgoing international calls except home country Deactivate |
| *#332*code# | - Check status of barr all outgoing international calls except home country |
| Block all outgoing calls | |
| **333*code# | - 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 | |
| **35*code# | - Activate all incoming calls barring |
| #35*code# | - Deactivate all incoming calls barring |
| *#35# | - Check status of barr all incoming calls |
| Block all incoming calls when roaming | |
| **351*code# | - 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 |
| Barr all incoming calls | |
| **353*code# | - Enable Blocking all incoming calls |
| #353*code# | - Disable Blocking 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. | |
 | Jack | December 14, 2021 |
| How block my phone Numbers on a TCL 20S | ||
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| Jack | December 31, 2021 |
| How block my phone Numbers on a TCL 20S | ||
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| Jack | January 01, 2022 |
| How block my phone Numbers on a TCL 20S | ||
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| Jack | July 14, 2022 |
| How block my phone Numbers on a TCL 20S | ||
| Reply | ||
| BcsWlgl | March 07, 2024 |
| The Android v11 smartphone with Snapdragon 665 processor and 6GB RAM offers excellent performance, a great camera setup, solid build quality, and impressive battery life. Great value for the price. | ||
| Reply | ||
