I know there's is a thred already on prepaid sim cards but all answers seem to be a little unclear so I thought I'll write what I am looking for.
I'm.going to the states for 2 weeks. I have a phone that can take any sim card and is not locked to any specific sim.I live in Europe and i use sim card from three mobile top up that gives me unlimited internet for 30 days. I am wondering is there any sim in the states that you can buy and get unlimited internet for 30 days with a topup that would suit any mobile? I really appreciate your help!