I received a new battery for my Wing yesterday. There was no warning from T-Mobile, just showed up on the door step. When I did an internet search I found that T-Mobile also replaced the Dash with a new battery by Celxpert (same manufacturer for my battery). Since I have several friends with HTC phones I asked if they received a new battery (or if their carrier was replacing them). Verizon advised that they were not replacing batteries in their HTC phones. Was this just limited to a couple of T-Mobile devices and not the others? The old battery was a Dynapack.