The bottom line: Industry titan AT&T finished last, while two smaller carriers that piggyback on AT&T's network, Consumer Cellular and U.S. Cellular, ranked tops.
Critics worry the tool lets phones double as spying devices, while the software maker says it is intended to help wireless carriers improve the performance of their handsets by communicating metrics.
At the show in San Diego starting Tuesday, we're expecting to see at least one new Windows Phone Mango phone, some awesome Android phones and maybe an inexpensive tablet.
So many people have already ordered the new phone that Sprint, Verizon, AT&T, and Apple online stores are telling customers they'll have to wait a little longer.
AT&T has revealed three new "Mango" smartphones coming soon, as well as plans to upgrade existing Windows Phone 7 models to "Mango".
Rumors are circulating that Sprint will offer its unlimited data plan for the iPhone 5 when it launches, but do the math and don't fall for the lure of the "unlimited" marketing gimmick.
Critics have said the merger would reduce the number of nationwide mobile carriers from four to three and could lead to higher mobile service prices.
Samsung's Galaxy S II is finally arriving in the United States. Here's a look at the AT&T, Sprint, and T-Mobile versions of the Android phone.
The BlackBerry Torch 9810 improves on where the original Torch left off, but in specs it remains far behind the competition.