the main reason is that i am torn between the iPhone and Android, i have both types of phones and cant part from either. The 4s is a brilliant phone but pathetic 3g reception so i use the Samsung gs2 for internet
My 4s has fantastic 3G reception here in the bay area of California.
I switched from owning multiple droid phones, blackberries, and multiple other smartphones (I worked for Best Buy Mobile) to the 4S the 3G performs many times better.
Must be about location?