How to reload ios on iPhone?

I know i can't wipe my Blackberry and all the apps will be deleted. How can i reload my iPhone? The reason why i'm asking this is because i wanna sell my phone and i don't want any of my info to be left in the phone.

You mean restore it to its factory condition? You can use iTunes or just your iPhone, either one should work well. Go to here.

http://support.apple.com/.../kb/ht1414

Hope I helped!

Steps to take before selling your iphone:
http://www.justtext.com/messageboards/20140127081812.html