I had a problem with my HTC Desire HD. After logical finding, I realize that this is the battery. it is under warranty, so I refer to the supplier, who keeps 15 days to make me always formatted with the faulty battery. therefore I command directly to the supplier on Amazon and 24 hours after I have my 2 batteries cheap, on top and my phone works wonders I am pleased to see that there still men who work seriously nowadays. André Casella