Factory Reset the Palm Treo

  1. If charging, disconnect your smartphone from its charger.
  2. Take off the battery door, but don't take out the battery yet.
  3. Press and hold Power/End .
  4. While holding Power/End, remove the battery for approximately one second, then replace it while still holding Power/End.
  5. When you see "Erase all data?" you can release Power/End. Press Up to confirm the hard reset.
  6. If a language selection screen appears, pick the same language you use in your desktop software.