Will restoring my iphone 4s to factory settings make it faster?

I want to start fresh and new. Will restoring my iphone make it faster or will it mess up my iphone?

Depending on how much stuff is on it, if there's, then restoring it to factory settings will improve the speed, at least until it syncs with itunes again.

HOWEVER

Your speed issues could just be because there are alot of apps open in the background

on the HOME SCREEN, double tap the CIRCLE BUTTON, this will show the apps running in the background

hoold your finger on one of the apps until in enters WIGGLE MODE and then tap the 'X' on the top left of each icon until all are closed

then your phone should speed up