its not contract its pay and go. but you can get a decent stretch tariff that works better than a contract to some point - ur getting more mins and texts than normal pay n go from other netowkrs but without a contract to sign.
its like 12p flat rate cross network and to landlines and texts are like 10p, you get free skype calls and free voicemail too.
various different plans starting from £12 a month which gives you 100 units which u can split between mins and txts - mix & match its called, the most you can get is £21 for 700 units - you also get 300 3-to-3 minutes aswell
http://three.co.uk/personal/price_plans_/pay_as_you_go_/what_it_costs.omp
and a 2gb internet addon for £5. bargainous.
that sounds sweet.
i'm tempted by pay&go if the 3sim does work then, and the allowance is 2gb.
you've definately got it fine on your iphone then? i'm confused as to why the pay and go card works but the contract one doesn't