Ok just got in touch with my uncle who works for At&t and he's up there in the mobility department. This is how it goes.
Sim card WILL NOT need to be changed until full LTE release. So your sim card will be fine with your inspire 4G
Your DATA plan must be changed. So if your on unlimited it must change to the smartphone personal unlimited for hspa+
If your on the 15 or 25 they must change to the HSPA+ version of those plans or you will not see HSPA+ speeds by end of march.
As of now Baltimore is the only place where backhaul is on.
Any questions ?
Sim card WILL NOT need to be changed until full LTE release. So your sim card will be fine with your inspire 4G
Your DATA plan must be changed. So if your on unlimited it must change to the smartphone personal unlimited for hspa+
If your on the 15 or 25 they must change to the HSPA+ version of those plans or you will not see HSPA+ speeds by end of march.
As of now Baltimore is the only place where backhaul is on.
Any questions ?