What is the deal with tethering or using a smartphone as a modem?
For some time now, AT&T has allowed smartphone users, except those with iPhones, to use their phones as a modem to connect laptops to the Internet. AT&T charged an extra fee for this capability, and it capped the services at 5GB per month, which is the same limit it puts on its wireless Internet service that uses a device that plugs in to a laptop.
