I popped into a Three store on a recent trip to the UK. Within minutes, I had a SIM card in my phone with an unlimited data on it for the month. It cost me some ridiculously small amount of money.
I wish the U.S. had a carrier like this. T-Mobile is trying, but only because they’re in a distant fourth place in a four team race. Otherwise, I’m certain they’d be just as awful as Verizon and AT&T.