Cell phones are very popular in Taiwan. Young and old relish the opportunity to use them. It would sometimes seem as if the only conversations Taiwanese people have with each other are the ones they have on their cell phones. I have personally known a person who only communicated with the person she was in a relationship with over the phone. Whether you can't live without your phone or only use it for emergencies, cell phones are VERY useful. And while you are in Taiwan, you will probably need one. Here are some links to help you get more info on where and how to go about it.
Mobile Phone Websites:
Land Line Websites:
International Calling Code Websites: