Looks like those days of free-spirited tethering
on AT&T may be over. AT&T has been known to really crack down on those trying to manipulate data on an iPhone. If you take a normal AT&T SIM and pop it into an iPhone, for example, you'll quickly be alerted that you are being switched over to an iPhone
data plan. The company clearly knows who is using what on their service, and they're most keen on knowing what's going on with those using the iPhone. For months now, those who would prefer not to pay extra for tethering have been able to use the MyWi app to do so without charge. The only requirement was a jailbroken device.
But now, it looks like AT&T is clamping down on MyWi users. Many are reporting that they have recently received a text message telling them that they are aware of the user's unauthorized tethering, and the message basically tells them that they will either need to call to confirm that they don't plan on doing it any longer, or they'll be switched over to a tethering data plan on the carrier. It's a pretty evil and sour move from a consumer standpoint, but we certainly understand the position that AT&T is in.
The cheapest data plan is the 4GB DataPro package, which runs $45 per month. If you're using a grandfathered unlimited $30/month plan currently, having AT&T switch you off of it could be a real bummer. So if you've been using MyWi, you may want to reconsider your actions. You may not like what happens should you continue.