One thing to consider is that if your parents have hearing aids you may not want to get a flip. As they may have apps that need to be used if you want to connect there hearing aids to the phone. I know my father's hearing aids do.
Also if they plan to do any texting its much harder to do on a flip.
If you still want a flip the cat s22 is well made but a little heavy. Runs on Android. Has a touch screen although small and hard to text with and many apps don't work well on it because of its screen size doesn't match what the app design for.
In my experience I find it easier to get them use to a touch screen as you can make text large for them. Put the numbers they use most on the main screen. The hardest thing to get them to do is spend money on a better phone. I would recommend asking some friends and see if they have an older phone that they can use. You Usually can get for cheep.
