Unlock your Smartisan U3 4/64GB

OS: Android

CPU: Qualcomm Snapdragon 625 MSM8953, 2000 MHz

RAM: 4 GB

Display: 5.99"

Battery: 4000 mAв‹…h

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 phone to PC and launch Tenorshare 4uKey for Android.
A menu will appear on the screen, press Remove.
After verifying the data, the removal of the smartphone screen lock will begin. Confirm the deletion, click OK.
After the process of removing the lock is completed, put the phone into recovery mode according to the prompts on the computer screen.
Click the Next button and follow the instructions on the screen. After rebooting the smartphone, the screen lock will be disabled.

2. Make a hard reset (factory reset)

To get started, 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.
Select Recovery by using the volume up/down buttons to move through the menu and confirm the selection by pressing the power button.
Using the volume up / down buttons, select Wipe data/factory reset. and press the power button.
Confirm the hard reset operation.

3. How to use a low battery to unlock a phone locked with a graphic key.

You need to wait until the battery of the phone is discharged.
When a few percent of the charge remains, the phone will report this and open a menu with power settings, that is, the lock will be removed.
You need to quickly open the menu item with security settings and disable the lock.

4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.

Turn off your phone and prepare a memory card.
Download Aroma File Manager via computer 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, follow the path Install zip -> Install zip from sdcard -> Choose zip from sdcard, go to the archive folder with this program and select it.
You need to go to the /data/system folder and delete the files 'gesture.key' and 'password.key' (for the Android 4.4 or lower operating system) or 'getekeeper.password.key' and 'getekeeper.pattern. key' (for Android 5 operating system 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.
Choose the option - recovery with a Google account. You will need to enter your Google Account username and password.
Remove the screen lock in the settings.

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.