I read so many posts in this forum about cell phones to use overseas that I am now overloaded with info and completely confused. I just don't know what to do now. Can someone tell me what phone to use and where to get it to use for my trip to Greece, Ireland, and Scotland next week? I only want to use it for emergency purposes - to receive and make calls. I don't need a fancy phone, and will not need it for texting or browsing the internet. Thank you.