In order to hard reset a Kyocera Solo E4000, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Kyocera Solo E4000 device will be brought back to the default configuration of a brand new device.
1. Power up the phone.
2. Next, select Start > Applications > Master Reset.
3. When asked to enter a password, type in 1234 (by default).
4. Press left softkey to confirm. Done!