If you have a family plan, just add him on for $10 a month. He’ll get a free phone if you’re with one of the major carriers.
FWIW, my little brother who is 15 now got a phone when he was 9, and was one of the last of his friends to get one. There were times he was at a sports practice that let out early that he needed to call for a ride. One could make the argument he could always ask a friend for it, but for $10/month, it’s such a small expense.
Generally, if the kid is responsible overall, he deserves one. Is he making good grades? At minimum, I think people should have cell phones when they get their license, for safety.
I definitely wouldn’t allow him to text, however. My little brother was sending/receiving 1000 a month (we had an unlimited plan because it was cheaper than individual plans for the 5 of us) and couldn’t be responsible with it.
I really hate the “we survived without them!” argument. Guess what else we survived without for awhile? Penicillin, 911, and the internet. Arguably all 3 have made life considerably better and easier.