£100 cashback & more on 12-mth O2 SIMplicity SIM-only mobile contracts - £11.25/mth!

[title=http://images2.moneysavingexpert.com/images/dp/wtd_underline.gif] What's this about?[/title]

Until the end of September, a cashback site's offering £100 and a free £10 O2 Money card when you sign up for a 12-month, SIM-only O2 contract. Since the network's popular SIMplicity contracts offer top value anyway, this is a great bonus.

The cheapest package usually costs £19.58/mth for twelve months. So, factoring in the cashback over the course of it, the monthly cost is reduced to £11.25.

[title=http://images2.moneysavingexpert.com/images/dp/wtd_underline.gif] How do I get it?
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First you'll need to sign up with the cashback site if you haven't already. The site doing the deal, Quidco*, takes the first £5 you earn each year as an admin fee, so if this is the only cashback you earn from it, the total return will be £95.

Now you need to click through to O2 via your chosen cashback site's special link, logging in on the way if you need to. It'll take you to O2's online shop, where you can buy the contract normally. Take care to select a 12-month SIMplicity package; the first tab it shows is for one-month deals (which start at £9.79/mth).

If you've previously looked at the O2 SIMplicity deal (either direct or on a comparison site) it's worth clearing your web browser's cookies before going to O2 via the link above, as they may interfere with the tracking process. If you don't know how to do this, see the AboutCookies site.

After a few days your cashback account should show that the cashback's tracked, though the amount of money it shows is likely to be incorrect. That should update in due course (within a month, when it's validated), and you should be paid within 60 days.

Cashback deals are never 100% guaranteed, though with special deals like this one they tend to work out. If you're unfamiliar with how they work, then it'll pay to read the Cashback Sites guide before doing this.

Free £10 O2 Money card on top.

As an added bonus, take up this deal and you'll also get an O2 Money prepaid card, loaded with £10 to spend on anything you like. You needn't top it up if you don't want to: just spend the pre-loaded tenner and ditch it.

The O2 Money card's a reasonable, if not amazing proposition for UK spending if you do want to keep it, and offers handy real-time balance updates by text. Read the full Prepaid Cards guide for the current top deals.

[title=http://images2.moneysavingexpert.com/images/dp/wtd_underline.gif] Will this suit me?
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While this deal is undoubtedly incredible value for the right person, it's still a waste of money if you won't use the minutes, texts and add-ons it offers. Use a comparison site like Onecompare* or Mobilephonechecker* to see if there's another tariff that's more suitable for you before plumping for this, and remember you'll need a decent, unlocked (or O2-locked) handset to put the SIM in.

Read the full Cheap Mobiles guide if you're in the market for a new handset.

[title=http://images2.moneysavingexpert.com/images/dp/wtd_underline.gif] What's SIMplicity?
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It's the name O2 gives its SIM-only packages, designed for people that already have the (unlocked) handset they want, but just want decent value usage. It's especially good for those who use a lot of data, as it's possible to choose an unlimited mobile web bolt on which lets you surf as much as you want (within reason) in the UK.

For £19.58/mth you get 800 mins and a massive 1600 texts, plus importantly you get to choose one inclusive add on from the following:

- Unlimited O2 to O2 calls
- Unlimited texts
- Unlimited weekend calls
- Unlimited landline calls
- 200 extra anytime minutes
- Unlimited Wi-Fi (at BT Openzone hotspots)
- Unlimited Web Bolt On (subject to fair usage)

Super-prolific, bordering-on-obsessive mobile users can opt for the £29.38/mth SIMplicity package instead, which offers a huge 1600 minutes and 3200 texts. This works out at £21.05/mth once the cashback's factored in.

[title=http://images2.moneysavingexpert.com/images/dp/wtd_underline.gif] Related Guides
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• Cheapest Mobiles
• Cashback Sites

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* Using these links helps the site stay ad-free and free to use, as they're 'affiliated links' which invisibly take you via commercial price comparison services like Moneysupermarket or Find, which then pay this site per click.

You shouldn't notice any difference, the links don't impact the product at all and the editorial line (the things I write) is NEVER impacted by the revenue. If it isn't possible to get an affiliate link for the best product, it is still recommended and still included. The following http://www.quidco.com/o2, http://www.topcashback.co.uk/retailerdetailO2.htm, http://www.onecompare.com, http://www.mobilephonechecker.co.uk are identical unaffiliated links provided for the sake of transparency. Click the following link for more details on how this site's financed.