Well, not Wallet per se, but the fact that I had to pay an extra fee to use Bluetooth with my Samsung. Uh, no.

I have AT&T. Dropped calls almost invariably happen right at the start, or I get a failed call. Very annoying but not fatal.

Verizon has better connectivity in the sticks (I have an iPad with Verizon service).

AT&T has the worst customer service but to be honest I've never used it so I wouldn't know. The web site application is utter 100% ass. Seriously, it's fully of donkey juice. It will mostly get the job done but at the end you'd almost rather go back to Yahoo's new email interface.