I am currently planning a 3 month trip to the USA (Pittsburgh, PA). As I have never been in the US and only rarely abroad and I was never alone abroad before I really want to make sure that I have internet access when I arrive. I have heard that many coffee shops have internet, but I don't want to rely on that. I would like to make sure that I have mobile internet.
To avoid unwanted high costs I want a prepaid solution just like simyo.de in Germany.
If I could use that simcard to make phone calls that would be nice, but internet is more important to me.
I have seen How to access the internet during a road trip in the USA?. However, as I am going to Pittsburgh I think I will have service.
I have seen AT/T, but one the one hand I'm not sure if they ship their simcard to Germany and I saw
Data (att.com/dataplans): If usage exceeds your monthly data allowance, you will automatically be charged overage for additional data provided.
When I use simyo, I get about 500MB of highspeed internet and afterwards free internet which is incredible slow, but I don't costs I don't want. Is there something similar in the US?