In order to hard reset a Motorola ZN300, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Motorola ZN300 device will be brought back to the default configuration of a brand new device.
1. Press Power button to switch on handset.
2. Type in lock code. (The default code is 0000 or 1234)
3. Phone will now reset and restart. Done!