Just wondering, what speeds are people getting when they go over their limited 4G (The $40 and $50 plans)? Would the phone matter as well? ie; Samsung Exhibit - 4G (HSPA 14.4) and an F3 - 4G (LTE Cat 3). I used the Samsung as an example because my nephew has one and the speeds are 1x when he goes over his 500mb. Just trying to get as informed as possible. Thanks in advanced to the community!!