Anyone else out there on a pay as you go account on there 4s? whenever i pop my sim card into an android phone my data's fast and everything loads quick thru hspa but when i use it on my 4s its kinda slow and even the facebook app takes forever to load up while having full bars on "4g" i use unlock.co.uz or something along those lines to change my apn settings and use the "wap.cingular" one, anyone else figure out a way for faster data or does att just limit iphone data speed on gophone?