I have purchased the 5S and have tested the alleged speed against my wife's I5 and there doesn't seem to be much difference. I have done the safari test with both having similar results. Not as many hiccups between apps, but it just doesn't seem right. Is there any way to check to make sure the processor is running efficiently? Could my restoration to my old I5 data when I connected to iTunes cause this lag? I guess I am confused b/c I thought this phone would cruise a bit faster. Of course, it says a lot about the I5 and it's processor. Thoughts?