Samsung Galaxy Rugby Pro I547 hard resetUse this method to hard reset your Samsung Galaxy Rugby Pro I547: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
If your Galaxy Rugby Pro hangs up, or freezes, you may need to reset the device.
If your device is frozen and unresponsive, press and hold the Power/Lock Key for 8 to 10 seconds.
Factory Data Reset
From this menu you can reset your phone and sound settings to the factory default settings.
1. From the Home screen, tap Apps ➔ Settings ➔ Backup and reset.
2. Tap Factory data reset.
The Factory data reset screen displays reset information.
3. Tap Reset device, then follow the prompts to perform the reset.
Warning! Performing a Factory data reset will erase all data from your phone and internal SD card, including your
Google account, system and application data and settings, and downloaded applications. It will not
erase current system software, bundled applications, and external SD card files such as music and photos.
If you forget your device's lock pattern, you can reset it using your Google Account credentials. When you enter the wrong unlock pattern too many times, you should see an option at the bottom of the screen that says Forgot Pattern. Touch this option and your device will ask you to sign in using your Google Account credentials. You may also use your backup PIN (if applicable) on this screen.
If you have forgotten your Google Account credentials, visit the Google website to recover them. If you still cannot get your Google Account credentials, contact your wireless carrier for additional options.