I accidentally locked my phone and i can't get back in how can I do a factory reset?

[iMore Question]

i Have a iphone 5c i put a lock on it last night i confirmed the new password but when my phone locked it says thats the password is incorrect now

 

[kch50428]

Is Find My iPhone set up on the device? From a computer... or another iPhone/iPad - you can remote-wipe the device.