I have a Sumsung Intensity, and today it shut off with full battery. I tried to charge it, but it didn't do anything the charging screen didn't even appear. i tried a different charger, and the same thing happened. When i try turning on my phone nothing happens, but when I try turning it on with a charger in the sliding keyboard lights, up. I already tried taking out my card, and it didn't do anything. I have let it sit for a couple of hours, and still nothing has happened.