I have a gen four I pad with SIM card capabilities. I bought it used. I know nothing about the sim feature. I know something can be done to have Internet capabilities on the iPad away from home like some phones have, but I do not know what to do to attain this service. I believe the iPad is 4 G whatever that implies. I was told that I live in an area that 4G is unavailable, but I am not sure if this is right, can someone help me out with this if possible. I know I will need to buy a SIM card, but that is all I know. My zip code is 26726. Thanks.