So my phone USED to do the whole reboot thing a few times a day. Now, it just shuts down completely without warning, doesn't matter how full my battery life is. I did a system restore, an update, a new battery, everything... and nothing works. I sent it in to Samsung, they told me they "replaced the component" and the very next day AFTER I got it back, it did the exact same thing. I'm stuck with this phone and I don't know what to do anymore, it dies on my randomly. I'm still under warranty but they don't even fix it when I send it in. Does anyone else have the same issue? Solutions anyone? Anything would help. Thanks!