In order to hard reset a Palm Treo 270, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Palm Treo 270 device will be brought back to the default configuration of a brand new device.
1. Take out the phone's battery. Press'n'hold the Power button and, while holding it, put the battery back in.
2. Release held buttons when the Palm logo appears on-screen.
3. An "Erase all data?" message will pop up. Confirm it by pressing Up.
4. Press OK to select proper language. Done!