Basically, i got a 'iphone sim card' with my iphone, it comes with a year of unlimited internet. so i put the simcard in and used the internet. now when i put in another sim card, it uses up all my credit saying its on the internet. it didnt do this before i put in the iphone sim card but it does it now even when im connected to wireless? can anyone help please because its annoying it used all my credit in one day 
connecting to the internet when i didnt even go on the internet
connecting to the internet when i didnt even go on the internet