So you've read the live blogs, seen the pictures, considered the new dock connector and lusted after the new screen...

But how do you actually buy an iPhone 5?

Luckily for us, we won't have to wait too long here in the UK. The phone goes up for pre-order from Apple on Friday 14 September and officially goes on sale a week later on 21 September.

Simple? Er... No. Here's the lowdown.

1. BUYING OUTRIGHT

If you just want to own an iPhone 5, and don't care about getting a new contract or money off the phone from your network, then you're in luck. Come Friday you'll be able to log on to Apple.com and buy a new phone for £529 (16GB), £599 (32GB) and £699 (64GB), and have it delivered a week later (stock depending).

However... when you buy the phone, you should have the choice to add a pay-as-you-go Sim Card to it - which even if you want to run it on your existing network deal, you might want to do.

Why? Because of the SIM...

UPDATE: We're now informed that pay-as-you-go nano sims are not yet available when you pre-order an iPhone.

2: THE NANO SIM

Apple's new iPhone uses a smaller SIM card, called a Nano Sim. And to get it to work, you're going to need one to pop in the phone.

Unfortunately, even if you have an existing iPhone you won't have a Nano Sim - so to use the iPhone 5 you're going to have to replace it.

If you pop into your network's retail store you should be able to swap your SIM for a Nano Sim, but availability and processes vary. Plus if your Network doesn't have its own stores, you might have to ring up or order one online. Just be aware of doing so before next Friday - else you won't have a SIM card for your lovely new phone.

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  • An Associated Press reporter holds the Apple EarPods during a product review in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • The Apple EarPods are shown during a product review in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • The new Apple iPhone 5 is displayed Wednesday Sept. 12, 2012 following the introduction of new products in San Francisco. The iPhone 5 is a blend of beauty, utility and versatility. (AP Photo/Eric Risberg)

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple unveils new iPhone model

    Technology giant Apple has unveiled a raft of updated products including the latest model of its new iPhone. The iPhone 5, which weighs in at 112 grammes, has a 4in screen - half an inch bigger than previous models, at Kings Place, Central London.

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: The new iPhone 5 is displayed during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPhone 5 during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: The new iPhone 5 is displayed during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • <a href="http://www.engadget.com/2012/09/12/apple-iphone-5-liveblog/" target="_hplink">Courtesy of Engadget.</a>

  • <a href="http://www.engadget.com/2012/09/12/apple-iphone-5-liveblog/" target="_hplink">Courtesy of Engadget.</a>

  • <a href="http://www.engadget.com/2012/09/12/apple-iphone-5-liveblog/" target="_hplink">Courtesy of Engadget.</a>

  • <a href="http://www.engadget.com/2012/09/12/apple-iphone-5-liveblog/" target="_hplink">Courtesy of Engadget.</a>

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPhone 5 during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage during an introduction of the new iPhone 5 at an Apple event in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • The iPhone 5 is shown during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage during an introduction of the new iPhone 5 at an Apple event in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPhone 5 during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: Apple CEO Tim Cook speaks during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks about camera quality of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage during an introduction of the new iPhone 5 at an Apple event in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Tim Cook

    Apple CEO Tim Cook talks on stage during the introduction of the new iPhone 5 in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, gives prices of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • The Foo Fighters perform during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage about new connectivity options during an introduction of the new iPhone 5 in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Greg Joswiak

    CORRECTS ID TO GREG JOSWIAK, NOT EDDY CUE - Greg Joswiak, Apple’s vice president of Hardware Product Marketing, speaks about EarPods during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Tim Cook

    Apple CEO Tim Cook speaks in front of an image of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Tim Cook

    Apple CEO Tim Cook speaks during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • The Foo Fighters perform during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, gives release dates of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage about the introduction of a new operating system during an introduction of the new iPhone 5 in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage about new connectivity options during an introduction of the new iPhone 5 in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage about new connectivity features during an introduction of the new iPhone 5 in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, talks about the features of the new camera and iSight during an introduction of the new iPhone 5 at an Apple event in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks about camera quality of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks in front of an image of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks in front of an image of the iPhone 5 during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Tim Cook

    Apple CEO Tim Cook speaks in front of an image of an iPad during an Apple event in San Francisco, Wednesday, Sept. 12, 2012. (AP Photo/Jeff Chiu)

  • Phil Schiller

    Phil Schiller, Apple's senior vice president of worldwide marketing, speaks on stage during an introduction of the new iPhone 5 at an Apple event in San Francisco, Wednesday Sept. 12, 2012. (AP Photo/Eric Risberg)

  • Apple iPhone

  • Apple Introduces iPhone 5

    SAN FRANCISCO, CA - SEPTEMBER 12: Apple Senior Vice President of Worldwide product marketing Phil Schiller announces the new iPhone 5 during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple announced the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

3. CONTRACT

Most of the major networks will be offering the iPhone 5 at launch, but as of right now few have announced prices.

Here's a good round-up of the various price deals and contract structures.

Quick Poll

Will you be buying an iPhone 5?

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4: 4G?

The new iPhone 5 comes with 4G LTE built in - which provides up to five times faster browsing speeds that the current iPhone 4S. But unfortunately, 4G is currently only offered by one UK network - the recently announced EE - and they haven't launched yet.

As such, if you want to buy an iPhone 5 with 4G, you'll have to first sign up to Orange or T-Mobile and then switch to EE once they launch in a few weeks' time. Complicated? Yes. Yes it is.

And if you're hoping that O2, Vodafone and other neworks will switch on 4G soon - you might be out of luck there too. The auction for new spectrum on which to run 4G hasn't happened yet, and even when it does it looks like the iPhone 5 will have to be updated to work on the new spectrum.

According to the tech blogs, Three's LTE network should be up sooner than that - but without any announcement we can't guarantee it.