A few months ago, we reported that AT&T is starting to crack down on iPhone tethering usage. Jailbroken users are able to tether without subscribing to an extra plan. Some new information has emerged regarding how AT&T determines who’s tethering.
Here’s something sort of unexpected… A few people have received text messages from AT&T saying that, to tether a smartphone to a computer, it requires a tethering plan. The ones who’ve received these messages are all jailbroken, and use MyWi, a jailbroken application to allow Internet tethering over WiFi, USB, and Bluetooth, for their Internet tethering needs.