Let me first say I love this phone! I had the Thunderbolt from day one. It wasn't a bad phone, but I had to take a charger with me everywhere....I had a charger in the car, at work and at home. The battery life was horrible. The battery life of the S3 compared to the Thunderbolt is awesome! I've had the S3 for about a month now and I have had something happen twice that I can't figure out why. First time I was using the phone checking email, pushed the power button to turn off the screen, put it in my purse. The battery at that time said about 86%. A short time later, I pull the phone out of my purse and I can't get it to come on. I push the power button, I'm pushing everything...nothing will turn the phone back on. I finally had to take the battery out and put it back in to get the phone to come back on. This happened about a week after having the phone. I go to the Verizon store I purchased it from and the sales rep tells me there is nothing wrong with it, sometimes you have to do a battery pull.....kind of like when you have to do a CTL-ALT- DEL on your computer. So now today I'm in Walmart, I have the phone in my purse, my daughter calls (she's in the store with me, but can't find me)....I pull the phone out, I can hear it ringing, but I can't get the screen to come on......totally black...the phone continues to ring, over and over again....I'm thinking why is she calling me over and over again. She walks up to me. She is not dialing me. She had already disconnected, but it's like my phone won't stop ringing...it rings and rings, stops for a second, starts ringing again. I finally had to pull the battery again. Any idea what might be causing this? Thanks ....Vickie