How can reset my iPhone 5c without computer?

How can reset my iPhone 5c without computer? - 1

Backup everything to your iCloud account via Wi-Fi or 3G / 4G LTE whatever you have.
Then go to Settings > General > Reset > Erase All Content and Settings > Erase iPhone.
After the reset, activate the phone and Restore everything from your iCloud Backup.

You'll find the right info here: http://www.digitaltrends.com/mobile/how-to-factory-reset-an-iphone/

Go to settings and restore factory settings