What are the cheapest cell phone plans for seniors?

Typically a good cell phone plan is hard to find universally cheap. There is always something out there that will appeal in one way and lack in another. As for seniors and due to the current generations becoming more and more tech-savvy, most seniors would understand a good deal on a phone without being left in the dark. The "typical" senior would most likely use a simply flip phone on a pay as you go plan.