Does this mean I cannot call UK without the long-distance plan ($3/mth) or is rate always 5cents/min even without plan? I call the UK very infrequently so $36/year is too much - can I pay for just one month and cancel after the call; and repeat as necessary?!
Yes. You can add the long-distance saver ($3/mo) when you needed and remove it at the end of the billing cycle. I call Japan from my phone time to time. So I add it before I call there(you will receive confirmation text/emal), then I try to make calls as much as I can in this billing cycle ;) If you don't have an unlimited minutes, it will use your minutes if you make calls during daytime.