How can you recover password in GT-C3520?

To recover a passWord on a GT-C3520, you typically need to perform a factory reset, which will erase all data on the device. To do this, turn off the phone, then press and hold the Volume Up, Home, and Power buttons simultaneously until the Samsung logo appears. Use the volume buttons to navigate to the "wipe data/factory reset" option and confirm with the Power button. After the reset, you can set up the phone as new, but be aware that this will delete all personal data.