In order to hard reset a HP iPAQ rw6818, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
HP iPAQ rw6818 device will be brought back to the default configuration of a brand new device.
1. Turn off the phone.
2. Press and hold the Answer/Send & End Call & Power buttons.
3. Pick up either stylus or another long, thin object and use it to press the Reset button.
4. Hold it down until the phone resets and restarts.
5. Remove the stylus. Done!