T-Mobile is joining Sprint and AT&T in offering their phones and plans at Radio Shack stores across the U.S. The main thing that T-Mobile is bringing to the table these days is the myTouch 3G, but if price cuts on Rogers are an indication of the HTC Magic’s limp performance, T-Mobile probably wants be pushing it out of as many outlets as possible. Good on T-Mobile for getting in there, though… We can only hope it won’t disappear like that Verizon deal. If you’re interested in comparing prices, you can take a look at T-Mobile’s offerings at Radio Shack over here.