T-Mobile flips on 42Mbps HSPA+ across 55 markets, launching Rocket 3.0 modem stick tomorrow

Fellow road warriors, we bring you good news: starting today, T-Mobile customers across 55 markets -- including Chicago, Detroit, Honolulu, Pittsburgh, Miami, and many more -- will have immediate access to a faster HSPA+ "4G" network. This means anyone with compatible devices can achieve theoretical download speeds of up to a whopping 42Mbps, as opposed to just 21Mbps from the good ol' days. But of course, only time will tell whether this upgrade will deliver its promise -- you may recall that even AT&T's LTE demo last week delivered "realistic" download speeds of up to just 28.9Mbps, when in theory it should be capable of hitting up to 100Mbps.

Anyhow, if you want to soldier on and be a guinea pig an early adopter, then help yourself to ZTE's Rocket 3.0 USB modem stick starting tomorrow -- the entry price is $99.99 after a $50 mail in rebate, but tied to a two-year broadband plan of 2GB or higher; or you can opt for the contract-free price of $199.99. Hit the press release after the break for the full list of activated markets.