Very simple to use, just put the manafacturer of your phone in, then type the model, and see how much money you can extrapalate from all of the cash for mobiles websites for your old handset.
Ive made an extra £15 just by doing this, and now this lunch time I will (hopefully) be going to T-mobile to buy a new Pulse.
Hopefully this will help a few of you out there get the dosh you need to get a nice shiny new handset. Certainly beats the hassle of selling on ebay!!
Keep a bookmark of this topic and let us know how you get on with the checker, and also the individual companies.
Check it out here