In order to hard reset a HTC Touch 3G, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
HTC Touch 3G device will be brought back to the default configuration of a brand new device.
1. For starters, power up the device.
2. Continue by pressing and holding the Enter & Power & Volume Down buttons for a moment.
3. Now tap Volume Up. Your phone should reset and restart.