buying a SIM extra vocabulary
I'm going to China soon and the first thing I'll want to do when I arrive is get a SIM for my phone. I've studied the Elementary lesson on this, but I know that there are more things I need to know. The last time I got one a friend helped - there were all sorts of options like being able to call all over China and international calling - can anyone help with vocabulary for these and other options? thanks, Ellen
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