My HTC Evo Design kept freezing and shutting itself off and now it just will not turn on. I just got this phone a few weeks ago and I haven't really downloaded many apps; I know there were many apps already installed on the phone. I don't know if apps are causing this to happen, but I just need help. I tried holding the power button down. Nothing. I tried plugging my phone in on the charger; it turned on for a little bit then shut off. I tried the factory reset by holding the volume button. Nothing. I tried taking the battery out for a while. Nothing. My phone was completely charged before my phone shut off, so my phone wasn't dying. I don't know what else to do but to take it to the boost mobile store, but I want to figure out what the problem is so I know for if my phone does this again another time.