Can I switch an iPhone from Sprint to AT&T?

I want to buy an iPhone 4 but my friend's service is Sprint. I have AT&T so can I switch the service? I heard you can switch the service if you can put a sim card in the iPhone but i'm not sure.

What will be deleted if i restore my iphone?

Well today ios 7 came out and i logged in with my brothers icloud? And now he can read my msg and i can read his. I already log out of itunes but he can still read my msg and i can read his. So i'm planning on restarting or restoring my ipod. Will my apps be deleted?

IOS 7 on Iphone 4? Why isn't it working?

When I go to settings<general<Software update it says IOS 6.1.3 Your Software is up to date.
I read online that the iphone 4 can get ios 7 so what's happening? Can i get the update?

How long does it take to erase iphone?

I have an iphone 4s and it is jail broken. Today the ios 7 came out so I was trying to un jail break it. I started by resetting it but that didn't undo the jail break. Then I pressed erased all data and restore and now the screen is black with the little swirling loading circle thing. It has been like this for over an hour now… Did I break my phone? Or is there something I can do to stop the erase? Or does it just take longer- if so how long?

When developing apps for iPhone and iPad?

Do you recommend me having at least iPod touch? Or both iPod touch and iPad? I have neither, but I'm

If I go to Apple Store and ask they will of course say "yes you need both iPod touch and iPad"

Sometimes the internet on my Iphone doesn't work?

Sometimes even when I have it connected to Wi-Fi my internet doesn't work it doesn't load or I get an error screen saying safari taking to long to load or something and then I have to turn my phone off and turn it on again and it works fine

It could be working fine and suddenly it stops working I hate this it pisses me off
Iphone 4s
Sprint

I think i broke my iphone 4?

I tried to install a new glass screen on my iphone. By doing so, i unscrewed some screws and when i put them all back together, the display won't work. Like the screen is completely black. The phone still rings when i get a text or call but i can't see what i'm doing on the screen because it won't turn on.

My Wi-Fi won't conect to my laptop but it will to everything else?

So i was just on my laptop and out of nowhere my Wi-Fi stops working on it. I got my mothers laptop and it was working fine on there it worked fine on both of our iphones and on our desktop but not on my hp beats auto windows 8 laptop. I reset the Comcast wireless gateway several times unplugged everything on the gate way and my vonege router/motem? ( i don't know which one it is ) but its still not connecting. And i typed in ipconfig/renew thing and the message " no operation can be performed on ethernet while it has its media disconnected " came up. I just don't know how to get the Wi-Fi to come up please help me As soon as possible!

How to install iOS 7 from beta 6 and GM?

This year was my first time experimenting with iOS betas. Since earlier today, I've been trying to update my iPhone 5 and iPad Mini from iOS 7 beta 6 (on my iPhone 5), and the iOS 7 GM (on my iPad Mini) over the air, but it keeps telling me that I'm already up to date. I also get the same result on iTunes. I've also gone the route of downloading the official iOS 7 IPSW and doing option-check for updates or option-restore on my Mac, but every one I've tried it, iTunes tells me that I'm using an incorrect firmware. Could someone help me out here?