hello all. i got my Inspire yesterday and i've been having issues with my mobile data connection. my house doesn't have the best connection but i've been able to access data anyway. with the inspire i cannot access data at all. when i check the mobile network settings i get a little message that says: "cannot connect to network due to failed APN settings" or something like that... i'm beginning to think it is my data plan that if affecting my data usage. i bought this phone off contract and did not change my SIM card or my plan. i currently have a 3g SIM in the phone and my data plan is the 2GB data plan for smart phones. from what i've been reading people have been saying that 3G SIM cards would work in the phone but you need to just change your plan. so.. i tried changing my plan online to the 2GB data plan for HSPA+/4G phones but then a message comes up saying how that feature is not available for the device on the billing system... phew.. so what i'm asking is do i have to go into the AT&T store and change my plan AND my SIM card in order to get my data working again??