What is the best prepaid service I can use for my iPhone 4?

I have an AT&T compatible iPhone 4 that I would like to start using again. I don't want to use AT&T because of the price, but I was looking for a good prepaid plan for it. I'm pretty sure straight talk will work if i buy a SIM card for it, but I have no idea how well their 3G works, and the website didn't say much. Any info about straight talk, or any other suggestions would be appreciated. I need something that has unlimited talk & text (or at least a lot of minutes if not unlimited), and a decent data plan (doesn't need to be unlimited, but I'd like something a little better than AT&T's bullshit 200MB plan). Straight talk is $45/month, so something in the $40-50 price range is acceptable. I currently have Boost Mobile with my droid, and it's terrible, and I don't think I can use the iPhone with it anyway. Please give me some good info/suggestions.

My iPhone 3gs is stuck on this mode

I tried to delete everything off my phone by rebooting it and it's been stuck on this screen forever! No matter what I do it won't go away! I've tried to restored it so many times and it tells me there's an error and it can't restore the phone. I don't remember the error code number

My iPhone 3gs is stuck on this mode

How to change my Facebook profile picture from an iPhone 4?

I'm not sure how to change it.

I have a picture I took with my camera on my iPhone and want to change it from there, but I have no clue how!

I tried the safari then profile tab but the next step was to select the info tab which I could not find.

If you'd help, I'd be very thankful!

IPhone three keeps shutting off, was in perfect condition?

My HTC Inspire stopped charging all together but my contract isn't up yet so my mom got an iPhone three. It was in PERFECT condition, not even a single tiny scratch on it. The first day I was using it it shut off five times out of random and the only way to turn it back on was to plug it into my computer. Now it is the second day I have had it and it keeps doing the same thing. Every time it shuts off it says it has a low battery even if it's fully charged. It over heats really easily and now i have found about 6 cracks down the back of the phone and it's raised (I'm guessing where the battery is) I can't take this anymore! I don't even like iPhones in the first place!

Added (1). My mom got the phone from a friend that had used it before with no problems, the only reason she doesn't use it is because she had an upgrade. However it's not under warranty anymore and I can't afford to pay to fix anything.

Can I flash a iPhone 4S over to MetroPCS?

Can I purchase a iPhone 4S at the apple store just the phone alone and take it to metro and just flash it over or no?

if i can then how much would the phone be.
please and thank you

I want to unlock my iphone 4s?

I want to unlock my iphone 4s but i have a 2 year contract with sprint! What happens to my contract if i do unlock it, does it end or what? Do i still have to pay even if i have a different carrier? Please help me out as soon as possible i can't be paying $90 a month!

How to hack into an iPhone 4?

I recently found drugs in my husbands car. When confronting him he denied having drugs in his car and that I must be crazy. I need to know if he is really doing drugs and I know that he will have info on texts or photos confirming my fear. He has an iphone 4. I tried the emergency call thing and it doesn't work.