Tesco Mobiles new pay as you go tariff gives you FREE credit, whatever you top-up. You choose how you use it for calls, texts and mobile internet browsing In addition, you get half price calls and texts to your 5 favourite numbers.Favourite numbers and free credit can be used for calls and texts to UK mobiles and standard fixed lines starting 01, 02 and 03. Free credit can also be used for picture messaging and mobile internet browsing. Free credit is given once each month, takes 48 hours to activate and is valid for the whole month.
The sim card is free, and you can ask for up to 2 sims. Quidco pays you £4.70 when you receive the sim card. Sounds almost too good to be true, but it only cost you 2 minutes of your time, so why not!?http://www.quidco.com/tesco-mobile-free-sim/
DIAL 282 when you insert the sim to activate it.