How to reset phone back to factory settings?

My phone will not let me log into Google or Facebook, the screen is too small to enter my information? is there a way to reset the phone so my regular homepage for google and facebook are returned to normal

To reset your phone to the factory default settings:

1. Touch Menu.
2. Touch Settings.
3. Touch Phone Settings, and then Reset Settings.
4. Touch Ok.
5. A message will appear that says "All settings will revert to factory default."
6. Touch Revert.
7. Enter your 4-digit lock code.
8. The phone reverts to factory defaults and restarts.

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