That's probably true, although I'm no expert. I have a "dumb phone", and its main exciting features are a hole that you talk into, and another hole that you hold up next to your ear to hear the other person. If you hold the phone just right, you can do both at the same time! Also, a button that you push to answer a call, and number buttons that you push to make a call. It's called a "phone", and is defined as such in the dictionary.
P.S.- I pay about $20 a month, and get to have a phone with me wherever I go. I love advanced high technology!