What are you looking for in phone service? Cell service, VOIP service are completely different technologies and don’t operate the same way.
What matters to me is(in this order):
1. superb coverage(no dropped calls or roaming fees)
2. sound quality, reception, and antenna quality
3. battery life
4. phone durability
5. easily readable clock and screen
6. large buttons
I don’t use the internet on my phone, I don’t use any customize features. All I ever use is the alarm clock, and occasional text messaging and occasionally the calculator. I use my cell phone as my watch and my calendar.
I currently use a casio Gz one boulder on verizon with extended battery because it is durable and it has an excellent clock and verizon is supposed to be the best for coverage. criticisms are crappy little buttons, the phone locks up frequently and lags frequently, sound quality is only average, and verizon is way too expensive.
I don’t think I could ever own a smart phone because I really need to have real buttons. I need large buttons. I also find a phone that folds in half when not in use (to protect the buttons and the screen) to be a superior design from a durability perspective.