In order to hard reset a Motorola RIZR Z10, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Motorola RIZR Z10 device will be brought back to the default configuration of a brand new device.
1. Hold down the Power button until the device turns on.
2. Now enter a lock code - default codes are 0000 and/or 1234.
3. Wait for your phone to reset and restart. Done.