To perform the soft reset:

Insert the stylus firmly into the reset slot, located on the right side, then quickly remove it

Samsung i350 hard reset

To perform the Samsung SPH-i350 hard reset:

  1. Push and hold the power button until the Shutdown box appears then touch OK to power down the handset
  2. Press and continue to hold the Enter/Settings key while pushing the power button to restart the handset (Do NOT let go of either key until the format screen appears)
  3. Touch the green Talk key to format the handset while deleting all data and restoring the factory default settings

To perform the Samsung SPH-i350 Clear Data reset:

1. From the Today screen, touch Start
2. Touch Settings
3. Touch Personal
4. Touch Phone
5. Touch the Security tab, located at the bottom
6. Touch Clear All Data
7. Enter the password then touch OK
8. Touch Yes to clear all data and restore the factory default settings

Samsung i350 hard reset

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.