Which Apple Mac computer do I need for Iphone app development?

I'll be using Cocoa touch written in Objective-C using the x-code 4.2 or whichever is the latest version. For installations, app development and app submission I can only use apple even though technically you can use Windows but illegally. Apple has a MacBook Pro and a MacBook air. I'll be using this specifically for App development only otherwise I already have a computer for all my other work. Is it better to get the MacBook Pro or the MacBook Air for the latest features that can be downloaded for Iphone app development?

Can you activate a new iPhone if it was bought in different country?

My service provider is a Canadian cellular provider. I was told by apple that I can get a free iPhone replacement for my canandian iPhone with an American one.
Apple told me that they are no different.

But when I went to go get my replacement. They put in the Canadian SIM card and it wouldn't activate bc I had a Canadian service provider… And automatically… Everyone knows that when you go down into the states… Your Canadian service provider (who ever your with) changes to an American service provider like AT&T or Verizon… And I couldn't get it:/ bc one, I had to be in Canada to "activate It" which I don't even know if it will activate or not. Lol two, I won't be back in Canada for awhile… So I'm stuck with my old iPhone.
My question is… Will it work? If I take that American iPhone to Canada will it work? And my service provider will be the same or what? So clueless! Lol

Found iPhone 5 Restore and Activation

Okay, so I found an iPhone 5 in Austin, TX when I was there for this really big music festival. This iPhone is from Mexico and I found it already deactivated, laying on the ground of the park where the music festival took place. Long story short, it was impossible to find it's owner. I followed the steps to restore it on iTunes in recovery mode and it was successful with the updating and restoring. When I tried to activate the phone, it made me enter the old apple ID and said that if I didn't have it, i couldn't activate it because this person has their Find My iPhone app on, and it is registered. This iPhone is from mexico, and there's really no way i can get it back. My younger brother lost his phone and since we found this phone we wanted to give it to him. Is there any way we can activate it, and go passed the Find My iPhone deal? Jailbreaking maybe? It's just sitting in a drawer, I would like to put it to use.

How to restore photos from iPhone 4?

I restored my iphone 4 and lost all my photos but i didn't lose my contacts. Is there a way i can restore my photos? I tried doing it with itunes but when i plugged my iphone only my brothers iphone appeared on itunes. Please help those photos are very import. I'm signed in with icloud, if that matters.

My iPhone 5 home button has recently became crunchy?

Every time I press it, I feel an off putting crunch. I have apple care, does anyone think they will cover this? I just don't want to go in for something that seems like such a small issue. However, I did purchase AppleCare for a reason. What should I do?

Any suggestion on any apps for listening to music?

I need an app to listen to music at school. Yes they allow it unless you got permission. I use youtube and, sometimes it was down or not working. I use a Vietnamese app called nhaccuatui it no longer support Ipad cause I updated it. It is an app for iPhone. I need an app that is free and can able to download any music you want. Please I can't survive without music.

My Iphone clone won't power on

Call me idiot but I accidentally dropped my phone at the bed while i was tossing in the bed and when I got it, it won't turn on! To think that it's just an Iphone CLONE made me hopeless. What should i do? I tried charging it and pressing the button but nothing happened!

Has anyone noticed that Siri's voice changed tonight?

I noticed tonight that my iphone 5 virtual assistant (AKA siri) has a completely new voice AND I don't like it. I miss the old sexy voice and I'm wondering if an unknown setting got changed accidentilly, if my speaker is damaged or if her voice has been changed again? Has anyone else had this happen?

Added (1). Update: Figured one thing out and that is that the rate at which siri is talking is getting faster and that's why her voice sounds different to me. She's talking super fast now. I wonder if i'll even be albe to understand her in the morning. It's like Siri on speed. LOL