Can I exchange an iPhone 3G for a iPhone 4?

I still use an iPhone 3G as my main phone, however it has gotten really old and the battery isn't holding up well. Where can I trade my 3G for a newer iPhone or is it not possible? Can the apple store do it? Radio shack? I have prepaid sim service, so I have no contract and I don't want to sign any contracts.

What is the best way to record video from my X-box 360?

So I'm really into youtube right now and I have a channel right now for just me with videos filmed with my iPhone. It actually works very well. The editing takes seconds for very awesome looking effects and everything. It takes a couple hours to take an idea of mine, film it, edit, then post it to Youtube. I have been working on a script for a year or two now on a (Machinima) if you don't know what that is then go to www.roosterteeth.com and find Red Vs Blue. My story is not a copy of that in any way, the ideas are very different and unrelated but i don't know how to film it. I heard something about a capture card? Some editing software? Something. But I really just want to find the best, cheapest, easiest way to record videos like that. Including the In-game audio. Doesn't have to include our voices. I have iMovie for that to add both audio and video together. So i have a computer, an iPhone, a Tv, an X-box360, and one headset and some friends that have the same. What do i have to buy? What is the simplest why?

Will i still receive texts if I turned my iMessage off?

I used up all my data this month, and I only can use iMessage in a Wi-Fi area now.

So when I'm at work or school and don't get Wi-Fi, will i still get a text from someone who has an iPhone? It would just show up in green and be a regular text, right?

Or would I not get it at all?

How long does Redsn0w take to jailbreak?

I'm using it to jailbreak my iphone 4 and it says 'uploading first stage' and the loading bar at the bottom is full but it's been like this for about an hour or maybe a little more. Is this normal? And i have 6.1.3 so i can't use evasion. :/ and does anyone know how long it/'' take?! I used this video:

T mobile iPhone have you pre order already? Price concern?

I was wondering how much you pay for the iphone because i wanted to switch from Verizon to t mobile to get the iPhone 5 32g which will be 199 down payment and 90 per month but i'm being told that it will be more because of hidden fees and all that so i was just wondering if i might actually pay more? If you pre ordered the phone and know anything about this.

What case should I get for my new iPhone 5?

I'm getting a iPhone 5 soon and it will be my first iPhone I want to get a case that is durable but fashionable but not bulky cause I still want the feel of the iPhone so I don't think I want the Otterbox but if its the better option tell me why I don't think I'll drop my phone a lot since I'm pretty careful but it may happen from time to time so what case should I get? Also I was looking at the Speck Candyshell for iPhone 5 and really like it do you think it's a good choice and durable enough to protect my iPhone as much as I need any other info on it would be great.

How to tell if someone is reading my messages in my iPhone?

Here's the deal… I have the Message Me app on my iPhone. My boyfriend has the Droid phone. He is the account manager on our cell phone account. Is there any way he can be reading my messages that I'm sending and receiving? He just knew some details about some thing that I was talking about that I had not told him! Is this at all possible?

Injustice IOS iPhone app

In the game I removed all the members on my team by dragging them down and then I exited the app. Now when I press Play and try to go to a level it crashes. I think this is because I don't have any members on my team, but I don't think I can edit my team without going to the battle screen. Is there a way that you can edit your team without pressing Play and going into a level?

Added (1). Yes I tried the tutorial, still crashes.

IPhone alarm while on phone

So I'm currently in a long distance relationship and every night we leave the phone connected while we sleep if one of us can't Skype that night and tonight he couldn't Skype and I have to let up early in the morning and I was wondering if I set an alarm in my phone and it goes off can will he be able to hear it also? I'm just wondering because don't want to wake him up at 3:30am.