We've been hearing for the past few days that users have been unable to get new AT&T-compatible SIM cards from Straight Talk and Net10 websites. The only option seems to be the T-Mobile SIM. This was causing quite a bit of consternation as the Nexus 4 is finally starting to ship again. The complete absence of AT&T SIMs from both sites led many to wonder if AT&T service was no longer being sold by these Tracfon-owned entities. Well, we've investigated and there appears to be no cause for alarm.
Straight Talk and Net10 are mobile virtual network operators (MVNO). That means that neither company runs its own towers – they just buy access from the big carriers.