Can i use my Iphone 4s with Metro PCS?

OK,
so my dad found an Iphone 4S at the park a week ago. The person just left it on the train. So my dad brought it home and gave it to me. I took out the sim card and restored it with a new passsword and updated it. Now, i want to connect it to metro Pcs with a sim card or whatever. Is it possible? The phone he found was from Sprint.

MP3SKULL for Iphone 4s Why can't I download any more music?

I've just descovered mp3skull, I've downloaded about 10 tracks just by clicking (all via iphone NOT pc) on the down load link, then "SAVE AS" but now when I click download it just takes me to an info sheet about the track and I can't see how to down load it any more!
Is there a download limit? Or do I need to register on the site?

Listened to loud music now have a muffled ear?

So i got Beats Studio by dr.dre. I put them in and i didn't know my iphone was on loud. We the beats made that noise LOUD. It was only for like 2 seconds but i took them off obviously. Now in my right ear its muffled. I'm only 14. Help! What did i do or is their any action i should take! Please!

How to create a folder I can lock with a password on my iPhone?

I know I can lock my iPhone all toghether by setting a password, but I just want to know if this can become selective in a way. Like, of I don't mind people having access to my music but not my messages or a certain application, is there a way I can lock them separately? Maybe if I could create a folder to put them all in and lock that folder alone?

Why won't my iphone home button work?

It was working fine half an hour ago, i put it down to go up stairs, came back down and it had stopped working! Why?
i haven't dropped it or done anything to break it.haven't even got water in it.

Added (1). Can you get the button replaced?

How to transfer music from my iPhone to iTunes on my laptop?

Ever since i got my iphone i have been buying music on my iphone and then putting it on itunes on my computer but a few months ago i got a new computer and i signed into my itunes account and i thought all my music would automatically download but it didn't. When i go on music and click "sync" it says "all music and playlists on iphone will be replaced with music and playlists on itunes" but since i have no music on itunes i'm worried that i'll loose all my music. How can i transfer music from my iphone onto itunes without taking it off my phone?

Iphone 4 won't turn back on or seem to charge?

Earlier today my phone died so I plugged it in. Then the apple showed like it was about to turn on, my lock screen showed for about a second and then it turned back off. It keeps doing that and despite the fact that I've had it charged for a couple hours now it says I need to plug it in. Is there a quick fix or do I need to take it into the apple store?

How to get notes off iphone?

I have the iPhone 4 (if that helps)

My dad needs 96 notes to be transferred from my phone to my mac, i know i can email them though it'll take too long. Are there any other options?