You may be surprised to learn that not all plans include data usage. This can mean that if you do not select the right 3G SIM only contract you are either going to be unable to surf the internet or will end up paying more than you had originally intended when you booked your 3G SIM contract.
If it is important for you to choose a 3G SIM only contract that includes data packages here is a look at the major carriers that include internet use. This way it will become easier for you to get the 3G SIM contract that suits you best.
Vodafone has three options. One is for regular smart phones, one is for iPhones and the third is for Blackberry devices. A regular smart phone plan costs either 25 pound or 30 pound depending on whether it is a 30 day or 365 day contract. Both offer you 500MB of data usage monthly. Blackberry plans offer 1024MB of data monthly for 25 pound and iPhone users can get 500MB or 1024MB for 25 pound depending on the plans length.
T-Mobile does not include free data unless it is chosen as a mobile booster and the 3 network offers 1GB of data on both 10 pound and 25 pound plans.
Orange offers you 500MB of internet on its 20 pound and 25 pound Dolphin plans and Virgin offers unlimited web access for 15 pound on a 12 month plan or 20 pound for a 30 day plan.