| Specification HTC A12 |
| Hard reset HTC A12 |
| Root HTC A12 |
| Unlock HTC A12 |
| Firmware HTC A12 |
| Developer Mode HTC A12 |
| Bypass Lock Screen HTC A12 |
| HTC A12 Factory Reset |
| Bypass FRP HTC A12 |
| Screenshot HTC A12 |
|
OS: Android 4.4.4 (KitKat); Sense UI CPU: Quad-core 1.2 GHz Cortex-A53 Display: 4.7 inches, 60.9 cm2 Battery: Removable Li-Po 2100 mAh battery |
| *#06# | - IMEI is a number used to identify a phone |
| *#*#3424#*#* | - Engineering Mode |
| *#*#3646633#*#* or *#*#54298#*#* | - Engineering Mode (for smartphones based on MTK processor) |
| *#*#4636#*#* | - Open testing menu (Phone, Battery, WiFi and other) |
| *#*#225#*#* | - This code show the number of festivities and events in your calendar |
| *#*#426#*#* | - Check the connectivity between the FCM server and the mobile devices |
| *#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. Unique Device ID, PID, ACAP |
| *#*#36245#*#* | - This code show email debug informations |
| *#*#8255#*#* | - This code can be used to launch Google Talk Service Monitor |
| *#*#64663#*#* | - Hardware Test (Version, screen, led, sound, vibrate, all sensors) |
| *#*#7780#*#* | - Factory Data Reset (all phone data will be erased). |
| *2767*3855# | - The firmware of the device is completely reinstalled |
| *#*#232338#*#* | - See the MAC address of the Wi-Fi network |
| *#*#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#*#* | - Full GPS test |
| *#*#197328640#*#* | - Enabling test mode for service activity |
| *#*#0283#*#* | - Packet Loopback test |
| *#0228# | - battery calibration |
| *#*#232339#*#* OR *#*#526#*#* | - Wireless Lan Tests |
| *#*#0*#*#* | - Mobile phone LCD test |
| *#*#3264#*#* | - Ram version |
| *#*#1111#*#* | - FTA Software version |
| *#*#2664#*#* | - Touch-Screen test |
| *#*#0588#*#* | - Proximity Sensor Secret code |
| *#*#8351#*#* | - Enables voice dialing logging mode |
| *#*#232331#*#* | - Show Bluetooth Test Mode |
| *#*#232337#*# | - Shows Bluetooth device address in HTC A12 |
| *#*#7262626#*#* | - Field test |
| *#*#0289#*#* OR *#*#0673#*#* | - Audio test |
| *#*#0842#*#* | - Backlight/vibration test |
| *#*#2663#*#* | - The displays touch-screen version of Android device |
| *#*#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# | - Activate waiting call |
| #43# | - Deactivate waiting call |
| *#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 |
| Set call forwarding | |
| *21*PhoneNumber# | - Register and activate divert all calls to PhoneNumber |
| ##21# | - Unregister divert all calls |
| *21# | - To turn Divert On for all calls |
| #21# | - To turn Divert OFF for all calls |
| *#21# | - Check status of divert all calls |
| Set up call diversion in case of "no answer" | |
| **61*PhoneNumber# | - Register and activate divert on no answer to PhoneNumber |
| ##61# | - Unregister divert on no answer |
| *61# | - Activate no answer calls divert |
| #61# | - Deactivate no answer calls divert |
| *#61# | - Check status of divert on no answer |
| Set 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 |
| Configure call forwarding 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 |
| Activate barr all calls | |
| **330*code# | - Enable Barr all calls on your phone |
| #330*code# | - Disable Barr all calls on your phone |
| *#330*code# | - Check status of barr all calls |
| Set barring of 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 |
| USSD Codes For Barring all outgoing international calls except home country | |
| **332*code# | - To turn Barring On for all outgoing international calls except home country |
| #332*code# | - To turn Barring OFF for all outgoing international calls except home country |
| *#332*code# | - Check status of barr all outgoing international calls except home country |
| Activate barr 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# | - Enable Barr all incoming calls on your phone |
| #35*code# | - Disable Barr all incoming calls on your phone |
| *#35# | - Check status of barr all incoming calls |
| Activate barr all incoming calls when roaming | |
| **351*code# | - Enable Barr all incoming calls when roaming on your phone |
| #351*code# | - Disable Barr all incoming calls when roaming on your phone |
| *#351# | - Check status of barr all incoming calls when roaming |
| Set barring of all incoming calls | |
| **353*code# | - Activate all incoming calls Blocking |
| #353*code# | - Deactivate all incoming calls Blocking |
| *#353# | - Check status of Blocking all incoming calls |
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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. | |
 | Mulicz | March 17, 2024 |
| The camera captures decent photos, but struggles in low light. Battery life is average, with slow charging. The phone offers basic functionality and performance. Software is outdated. | ||
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