We offer two different sim cards for people travelling to the United States. The best option for you will depend on a number of factors such as whereabouts you plan on travelling to and whether you need your US mobile phone number prior to travelling.
Generally, ZIP SIM is a cheaper option, which is ideal for a short trip to the United States. However, the two main drawbacks with ZIP SIM are that you won’t know your US mobile number until you arrive in the United States and this sim card has a relatively small data allowance.
AT&T is a more expensive option but it offers a lot more. AT&T has better coverage (and it can be used in Canada and Mexico), more data and with AT&T you will know your US mobile number several weeks prior to travelling to the USA.