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Unlock your TCL 403


 Specification TCL 403 
 Root TCL 403 
 Firmware TCL 403 
 Developer Mode TCL 403 
 Bypass Lock Screen TCL 403 
 TCL 403 Factory Reset 
 Secret codes TCL 403 
 Screenshot TCL 403 

TCL 403


OS: Android 12 (Go edition)

CPU: Quad-core 2.0 GHz Cortex-A53
RAM: 32GB 1GB RAM, 32GB 2GB RAM
Display: 6.0 inches, 92.9 cm2 (~74.6% screen-to-body ratio)
Camera: 8 MP, f/2.0, 27mm (wide), 1/4", 1.12µm, AF
or
5 MP, f/2.4, 27mm (wide), 1/5", 1.12µm - T431Q only
Battery: Li-Ion 3000 mAh


1. Use the Tenorshare 4uKey for Android app.
2. Make a hard reset (factory reset).
3. How to use a low battery to unlock a phone locked with a graphic key.
4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.
5. Restore access to your smartphone using your Google Account.

1. Use the Tenorshare 4uKey for Android app.
  • Connect your smartphone to your PC and launch the 4uKey for Android program.
  • Press the Remove button in the menu that appears on the PC screen.
  • The program will warn you about deleting all data from the smartphone, to continue working, click OK.
  • Wait until the lock is removed, and then put your smartphone into recovery mode according to the prompts on the computer screen.
  • Click the Next button, follow the steps recommended by the program. After rebooting the smartphone, the screen lock will be disabled.


2. Make a hard reset (factory reset)
  • Turn off your smartphone.Simultaneously press and hold for about 10-15 seconds one of the button combinations:
    Volume down button + Power button;
    Volume up button + Power button;
    Volume down button + Power button + Home button;
    Volume down button + Volume up button + Power button.

  • Using the volume buttons to navigate through the menu, select Recovery and confirm by pressing the power button.
  • Select Wipe data/factory reset. using volume buttons to navigate through the menu and confirm selection by pressing the power button.
  • Confirm the reset.


3. How to use a low battery to unlock a phone locked with a graphic key.
  • You need to wait for the battery to drain.
  • When the battery has a few percent charge left, the phone will notify you and open a menu with power settings, that is, the lock will be removed.
  • You need to quickly go to the security menu and disable the lock.


4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.
  • Turn off your smartphone and remove the memory card from it.
  • Copy Aroma File Manager to your phone's memory card. Insert a memory card into your smartphone.
  • Using a combination of buttons, put your smartphone into recovery mode.
  • In recovery mode, select the option Install zip -> Install zip from sdcard -> Choose zip from sdcard, go to the archive folder with this program and select it.
  • After starting the program, you will need to go to the /data/system folder and delete the files 'gesture.key' and 'password.key' (if you have Android 4.4 or lower) or 'getekeeper.password.key' and 'getekeeper .pattern.key' (if you have Android 5 or higher)
  • Restart your smartphone. The screen lock will be released.


5. Restore access to your smartphone using your Google Account.
  • After several unsuccessful ways to unlock the phone, Forgot password? will appear on the screen. Click on it.
  • You will need to enter your Google Account username and password.
  • Reset the screen lock.

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.


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