Quickest, cheapest way to unlock an iPhone?

I just sold my Orange network iPhone 4 on eBay. I scanned the barcode & the spec said it was unlocked but the buyer says its not working and would like it sorted. I have the serial number and IMEI number… Can someone recommend any legitimate websites that unlock the handset or whether my provider can do anything without sending the handset away. I have no idea how these things work, so any advice / rough prices would be very helpful As soon as possible.

My MacBook Pro won't connect to my iPhone as a network?

I have I been trying to use my MacBook as a Wi-Fi hotspot. I googled and figured our everything
http://pinoyappler.com/2012/03/09/turn-your-mac-into-a-wifi-hotspot/

I did everything and my phone is connect to itunes and syncs but in the Networks it says iPhone USB not connect I'm really confused.

Can someone please help me this will greatly be appreciated!

Differences between the iPhone 4 and iPhone 5?

My mom is getting me an iPhone 4 for my birthday. My dad said she should have gone with the iPhone 5 because its better. Are there really any major differences between the two? Does one run faster? Are there certain apps that I can only get on one of them?

I'm anti social.is it about time?

I'm 14 years old.
I have got friends but i'm so socially awkward.
I hardly ever go out with them and don't turn up too parties.
I have an iphone, everyone says how lucky i'm but don't make use if it.
I have very few contacts on my phone.
Is it about time i download facebook, twitter instagram you name it?
If so how should i start, everyone has had there accounts for ages.
Advice please thanks.

Bq: about the confidence, how do i become more sociable?

Quality Converter For Video Project?

This semester i'm taking advanced video class, which I film with a camera and than upload to final cut in order to start editing. The problem is, I hate using the school cameras, they get taken easily and I never have time to use it. So I would like to use my iphone camera(don't mind the shaking) but i'm sure the quality will suffer once I upload the film from iphone to final cut, does anyone know any quality converters so I can have perfect quality?

I have a problem with ebay? Fast?

I sold a iphone 4 for £150 and the buyer never paid for the item and now ebay has automatically taken £25 out of my bank when I never got paid for it in the first place, please help?

IPhone 4S stuck in DFU mode?

Sometime last night while I was sleeping, I enabled DFU mode on the iPhone 4S ios 5.1.1 somehow. I've tried the buttons, and iTunes but for some reason, my computer isn't seeing it as a device. It is jailbroken, I can't recall what I used but I'ts been jailbroken for a while now. Is there any way to get out of DFU mode without resetting my phone, or having to upgrade to the new ios?

Added (1). How do I update if my computer won't recogonize it?

How much does it cost to fix an iphone 5 screen?

I was just wondering how much it would cost to fix and iphone 5 screen that is smashed and unresponsive to touch? I don't mind if its fixed by apple or a third party but I just want to know roughly how much it would cost (in £)
Here's a pic of my phone: .html? Sort=3&o=0
Any ideas?