I received a replacement 4G LTE due to my previous device having a reboot issue. I put the phone on the charger and downloaded my contacts and information. 3 hours later I go to use my phone and it is off. I held the power button down and it wont' turn on. When plugged in the indicator light does not light up. Is my Evo 4G LTE Dead? This has been the worst week for smartphones. It is my third replacement. (1st Evo 4G LTE)