I don't know how. I don't know if I dropped it or what. But I went to pick up my phone, and I thought the case was off so I squeezed it a little but nothing happened. And i found out that the corner popped out. Its the upper right hand corner, and If I look inside I can see the light. Anyways, I read other things related to this, and people said they either pushed it really hard, or they bit it down and it popped back in. Well I'm not going to do that. For one I don't have money to go and buy a new iPhone. Anyways, i was going to see if my dad could take me to the nearest Apple store and get it fixed. Until then, should I be worried about using it? It works fine, but I fear that it'll shock me, or that it'll get fried or whatever. My phone is covered by it's warranty, and an apple rep has said that I can take it in and get it fixed for free. So that's what I am hoping to do.