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