How to unlock an iphone 3GS?

My boyfriend iPhone r and it's on o2 but he wants to unlock it to put his original sim card in it, how can he do that?

Is there a way I can get my iPhone 4 replaced by apple?

I have an iPhone 4 16gb, I have the apple care till next January. I really want to replace this iPhone and get a new one because I don't want to waste the warranty. I took it in and said it gets heated alot (which it does) but all they did is restored it. Does any one know how I can get a replacement?

Can my iphone 4 be repaired? - 1

About a week and a half ago, I went swimming in a lake with my iphone 4 in my pocket. I hadn't noticed it in my pocket until about 20 minutes of swimming. After I noticed it, I attempted to dry it off with a towel, but there wasn't any rice or anything like that to put it in until 2 days later when I returned home. I let it sit in a bag of rice for about 3 days (just incase there was still any water trapped inside). I then tried to charge it and turn it on, but of course, it didn't turn on.

So i'm wondering if this can be repaired and if so, where could I get it repaired or if I can repair it myself?

How to remove jailbreak for iPhone 4 (5.0.1) redsn0w?

Okay so I jailbroke my iPhone 4 with the redsn0w software or whatever and now i don't know how to uninstall it. Firstly I have tried the "restore" method but I always have to download the newest iOS, but I can't because of the jailbreak. I'm stuck on 5.0.1 and I'm unable to restore it or download the new iOS because of it. I have Sprint, and I tried everything I can to try and remove it, but nothing seems to work for me. Help please?

P.S I have tried looking on the internet, but no one seems to have asked or posted about fixing it.

How to activate Iphone 4s without the original sim?

I've recently brought a iphone 4s that needs to be activated.
This wouldnt be a problem if I knew what country and network it was looked to so i could purchase the original sim.
Unfortunately I live in NZ, and the iphone is not from here.
Is there any way to activate the Iphone without the original sim?
Please no stupid answers and keep in mind it is a 4s.

Unlocking an iPhone 4s for T-mobile?

So my friend just sold me his iPhone 4s that he had for At&t and I'm trying to figure out how to get it to work for T-mobile. I have a micro-sim card for T-mobile for the phone, but the service doesn't work. How can I unlock the phone for my carrier? Its running 5.1.1 and I have tried jailbreaking it and running it through SAM and it didn't work.

How to recover lost songs on my iPhone 4?

I tried syncing my iPhone with iTunes and almost 400 songs were deleted… How can I get back the songs that were lost from iPhone? I don't have them on my iTunes library… How can I recover the deleted tracks from my iPhone… I would need software compatible for a Mac, nothing Windows related!

I don't see iMessage in my settings?

I just got an iPhone 4 and texted my friend and she said to use iMessage cause its faster. I went to settings--->messages, and i don't see iMessage in there.