E2save has Sony Ericsson D750i handset on T-Mobile tariff with £2.99 / month for 12 months (12 month contract)
Go through Quidco for £36.50 cashback meaning you can break even. Offer available on T-Mobile Relax 20 tariff with 100 x-net mins and 25 texts / month.
D750i features : The Sony Ericsson D750i mobile phone is a stylish device that offers lots of great features. The D750is clean design integrates a 2.0 megapixel camera and a 262K TFT colour display. Once taken, images or video can be edited using the Sony Ericsson D750is Video DJ software and sent via Quickshare to Bluetooth or multimedia messaging service (MMS) compatible devices. The Sony Ericsson D750i also features a multimedia player with Mega Bass, an RDS Radio and the brilliant 3D racing game Motoraver.
Offer details : A credit of £5.00 will be raised automatically by cheque within 2 months if you do not cancel your contract. You will receive a text message when this credit has been successfully raised.To gain the remainder of your line rental / cash back please send your 6th, 8th, 10th and 12th monthly bills within 30 days of the date stated on the relevant airtime bill, to us and we will credit you by cheque with £49.78 each time. This will save you £204.12 over the 12 month duration of the contract. In effect this means that your average line rental per month over the contract period is £2.99 per month.