If you're using T-Mobile's network to torrent all seven seasons of The West Wing (remember kids, piracy is for jerks) or tethering like an absolute madman, don't be surprised if your data speeds start dipping dramatically over the next few weeks. According to a leaked internal memo (which T-Mobile has substantiated) data draining customers with one of the carrier's Unlimited 4G LTE plans -- like the $80 Simple Choice option -- will see their speeds throttled starting on August 17 if they don't change their network hammering ways. The only real consolation here is that T-Mobile won't spring this on you out of the blue. Before you start getting throttled, the carrier will contact you to give you a warning -- if you don't shape up, your LTE speeds will be cut down until your next billing cycle rolls around.