Verizon has set and pushed back deadlines a few times:
I wonder if Verizon always knew it would push back the early deadlines. Even if the early deadlines were artificial, they may have helped transition subscribers off of 3G-only devices:
In today’s announcement, Verizon stated that it would not push back the retirement deadline again. I’m unsure whether Verizon will keep a tiny portion of its 3G network active after 2022 to support business customers using legacy technology.