T-Mobile USA’s really kicking things into high gear, coming from behind (way behind, actually) on its 3G launch to become the first to bring 21Mbps HSPA+ here — and possibly the only one to do it, considering that its closest GSM rival is leapfrogging from 7.2Mbps HSPA to LTE. Speaking at 4G World in Chicago, T-Mobile’s Neville Ray has gone on record saying that its 3G footprint will be blanketed by HSPA+ next year and is actually already up and running in parts of Philadelphia; amusingly, he was apparently a little weirded out by AT&T’s earlier comments at the show that it’d have 90 percent of its 3G coverage upgraded to 7.2Mbps by the end of 2011, suggesting that was slow (we’d agree, but then again, considering how far behind T-Mobile still lags in raw 3G coverage, we’re not sure they’ve got room to talk just yet). If we had to guess, this huge push for mega-fast data has to do with investor discontent on the Deutsche Telekom side of things, so you can bet there are some crossed fingers out in Bellevue as this stuff lights up; now, just give us the world-class phone selection to match and we’ll be good to go.