Which Galaxy S4? Beware, there are a lot of different models, S4 Mini, S4, S4 Maxi & so on. I paid £250 for my brand new in the box Galaxy S4, it worked a treat til Xmas Eve then died so it's gone back to be repaired, the loan phone is an S4 mini, not a patch on its big brother. Always go by the model number not name then you know what you're getting.
This is the model number for the "main" S4: GT-I9505
Here lists the various models available:
http://en.wikipedia.org/wiki/Samsung_Galaxy_S4 - scroll down to model variants.
PS: I can now see poor old Lance having a coronary over his cay wondering why on earth he ever asked the silly question lol.