In order to hard reset a Elson EL490, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Elson EL490 device will be brought back to the default configuration of a brand new device.

1. Press and hold the Power button to turn off the phone.

2. Open Menu > Settings > Reset > Master Reset.
3. Tap in the security code 1234 in order to begin the hard reset.