my dad recently bought me a replacement galaxy s4 from t-mobile for 40$ i had it for only two days. i skateboarded today and i fell, when i turn on my screen it just flashes. sometimes it shows a portion of my lockscreen. should i just buy a new one or could i repair it for cheap without my dad finding out i broke a two day old phone. or could t mobile give me another replacement but for maybe 100$ or something?