T-Mobile HSPA+ Speed Test: 3G Gets Pumped Up to 21MbpsKyle VanHemert3/16/10 9:00am791EditPromoteGo to permalinkStreaming HD video. Uploading gigantic files. Surfing the web comfortably. These aren't things you'd normally expect on 3G. But T-Mobile's beefed up HSPA+ network, which I tested recently in the first city to launch, handled these tasks beautifully. Simultaneously.