Some people legitimately don't know if a phone is the right phone for them... and I think especially coming to a smartphone (if you've never had one) and an OS you have no experience with, the full 30 days might be necessary to help people determine once and for all if they made the right decision. I knew within 3 seconds that I loved my phone, but I had also played with it quite a bit before making the purchase, so it was already somewhat familiar. I think this time restriction is ridiculous. As it is, you could only exchange one time, so it's not like people were getting a new phone every month.