Lol, using a foreign Sim card, all that's required for data is the correct APN (access point name). Depends on the carrier and the country, though. I've had to reconfigure APNs for a lot of the Sim cards I've used because I use a lot of data only cards (where they tell me it's only for use in a USB dongle for my laptop). I'm currently on one now in Greece (WIND mobile). I had to plug the dongle into my computer and install the software to see what the correct APN was, but once I added the correct one, data worked fine.
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