Ive had my phone for 1 week. Last night with 80% charge it shut itself off. I tried powering back on, but did nothing. Put it back on charger, wouldnt charge. No light, nothing. Called carrier support, they had no idea, but wanted me to take to a store to see if can be repaired. I said no, i want it replaced. So now im waiting a day or 2 for new phone. Anyone else had this issue? The tech on phone had me try & hold power key & volume up key down at same timr. It did nothing.