If you are on O2, Tesco Mobile or GiffGaff and want to get a Nokia Lumia 800 smartphone, then it makes sense for you to consider this deal from Dialaphone which allows interested customers to get Nokia's Windows Phone handset for as little as £341 (or £14.21 per month), compared to the official suggested retail price of around £450, a saving of around 25 per cent.
The deal structure - according to HUKD - is fairly straight forward and uses two loopholes from O2 to bring down the price of the contract.
First, you need to buy the phone (£19 one off fee) and the contract, £25.50 per month on a two year contract. This means that the first month will cost £44.50, but then immediately drop the 1GB mobile internet data allowance and unlimited Wi-Fi access, a move that can only be done directly through O2. This will save a tenner each month (that's a saving of £230 over the duration of the contract).
Then after the 12th month, drop the price plan to the lowest available (currently O2 50), a move that will save you £60 for the remaining 12 months.
The non-discounted price of the deal is £631; that falls to £341 once you apply both discounts - and that doesn't even factor in any cashback from Quidco or TopCashBack. The contract itself includes 100 minutes, 500 texts but is trivial at this point; what's more important is that it is essentially a free loan.