Unlock your Samsung Galaxy Trend 3 G3502C

OS: Android 4.3 Jelly Bean

CPU: Qualcomm Snapdragon 200 8210, Processor clock: 1.20 GHz, Number of cores: 2, GPU: Adreno 302

Display: Color / IPS TFT, 16M colors, 480 x 800 px (4.30") 217 ppi, ~61.5% screen-to-body ratio

Camera: 5 Mpx

Battery: Li-Ion 1800 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 phone to PC and launch Tenorshare 4uKey for Android.
A menu will appear on the screen, press Remove.
Smartphone screen lock removal will start.
Wait until the operation is completed, and then put your smartphone into recovery mode according to the prompts on the computer screen.
Click the Next button, then follow the steps recommended by the program to restore the device to factory settings and reboot it. 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 to navigate through the menu, select Wipe data/factory reset. and press the power button.
Confirm the reset and reboot your phone

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

You need to discharge the battery. To speed up the process, make sure that the screen is constantly lit.
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 open the menu with security settings and turn off the phone 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 the combination of volume and power buttons, put the 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 block will be removed.

5. Restore access to your smartphone using your Google Account.

After unsuccessful attempts to unlock the phone, Forgot password? will appear on the phone 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 from 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.