It's not often the case, but T-Mobile is playing catch-up with some other carriers when it comes to getting OS updates to a flagship phone. Sprint M9 owners got it on the first of July and AT&T versions were updated two weeks ago, but at not-so-long last T-Mobile HTC One M9 owners will be upgraded to Android 5.1 as well.

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Of course, the T-Mobile M9 got the oft-mentioned camera improvement update way back in April, so they were first to get what was arguably the most important OTA for the M9.

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