How To Get an iPhone from Verizon or Sprint to work with Metro PCS?

If I get an iPhone from Verizon or Sprint will I be able to use it with Metro PCS if I get it flashed? I live in the Los Angeles County and I want to get an iPhone but I'm with Metro.

So can someone please help me with getting an iPhone 4 from Verizon or Sprint to work with Metro PCS in the Los Angeles County? And how much will everything cost?

I've read online that only those two can work with it?

How to keep Iphone 5 from jumping to the appstore?

Hi, when I'm on the Facebook app or some websites my iPhone will take me out of wherever I'm and jump to the appstore to try to get me to download some dumb app. I've enabled the pop up blocker for safari, but is there anyway to stop the Facebook app from doing it? It's every time I go to a new page and it's getting extremely frustrating.

How to store photos on iphone?

I want to keep pictures but i do not want them on the camera app, i want them to be stored elsewhere, then able to delete them off camera without deleting the file. Is there a app for this?

Buying an iphone from walmart?

Getting an iPhone from At&t and having their service would be 97$ a month. Which is kinda high.
The nearest T-Mobile store is 45 mins from me and the only other place is walmart.
Can I buy an iPhone at Walmart through a T-Mobile provider and Walmart activate it but my bill still be with T-Mobile?

What do to about my iPhone? Urgent?

My iPhone 5 smashed a few weeks ago, I ended up ordering a new screen off eBay and replacing it all, however recently I unscrewed the screen and accidentally the phone was still switched on. Now my screen is black but I can still hear the phone go off. Apple want about £220 to repair it however I won't be able to get that amount of money quickly.So, what should I do? I have the phone on contract and paying nearly £40 a month therefore I need a phone if I'm paying that. Should I sell my iPhone on ebay for parts and etc. Or buy a new screen and try replacing it again? Or are there any other alternatives?

My iPhone 4 fell into the bathtub, but it's still working?

When I was taking a shower my iPhone 4 fell into the bathtub. It didn't get complitely wet, it was just the top. I quickly got it out and it was working. I turned it off and dryed it with a towel. At first, the audio wasn't working but now it does. Anyways, I wanted to ask you guys how long will it work and is it possible that it will freeze in a couple of days? In my country, there aren't much tech stores that can advise you on what to do, so…