What's the best/cheapest way make calls to the USA from Madeira? I've read so many horror stories about the iPhone & excessive data usage that I'm inclined to leave it home and bring my husband's simple cell phone. I can get a Lebara Sim Card for France and Spain, but I'm not sure what to do for calls from Portugal. Prepaid calling card? (And I should probably buy a USA to Madeira card for our son so the grandkids can call us when they want to--we'll be gone a month. First time ever that we've done that and this seems like the last snafu.) Many thanks for your help.