FWIW, both AT&T (GSM) and Verizon (CDMA) phones have unique serial numbers that can be used to block stolen devices from being re-used on the networks.You can't report AT&T phones stolen since the SIM card is the only thing making the phone yours.
Again, AT&T with their policies, but until this summer, it was their policy to not block stolen phones. Now will they not only block a stolen phone, but they and T-Mobile now share their databases of stolen devices, so stolen phones will be blocked on both networks.
Just so you know, when they do slow your 3G down, they're throttling you.Verizon doesn't throttle. It's only when your on a congested tower do they slow your 3G down
Your other points are valid. AT&T throttles you 24/7 for the remainder of the month, once you hit their threshold. Verizon throttles the top 5% data users only when they connected to an overloaded tower.
But the verb for a carrier "purposefully reducing your data speed" is: throttle. And both AT&T and Verizon do it. They just have totally different policies about it.