Our daughter will be volunteering in Tanzania for 2 months starting in March. We want to purchase a 10" tablet like the Windows Surface Pro with full USB port for her to take over. She will need to access email to contact and reply to grad schools while she's there. She does not have a cell phone with SIM cards. When she's there, can she purchase a "stick" or modem device and a certain amount of minutes or megabytes or whatever they call it to put into the USB port to access the Internet on a tablet like the one I mentioned? In other words, she doesn't need a tablet that has to use SIM cards? We don't want to buy her something that won't work. The whole idea is for her to have access where she's staying so she can read and reply to these various grad schools. It's crucial that she has a connection. Is this something that she will simply insert into the USB port? Please advise! Thanks!