It's actually the second battery. The first one had been working pretty good for about two weeks until I accidentally dropped my phone in the water while fishing. I get it out almost immediately, by something has happened - I couldn't charge the battery anymore: "unable to charge" was the message on the phone. Fortunately, I kept my original battery that came with the phone, and it was still working - it just required frequent recharging (that's why I replaced it). So I ordered a second battery, but have had trouble with this one from day one. Some times, after numerous tries, I can get it charged, but most of the time it just doesn't work. So I'm back to my original battery and, most likely, will buy a new phone when I'm fed up with recharging every other day... Bottom line: it's an inconsistent, low quality product - you may get lucky like some people have, but equally probable you may get a piece of junk.