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Who still uses pagers?
(www.voanews.com)
This is a most excellent place for technology news and articles.
You can also setup local comms network for them and the bands they can operate in have better structural penetration vs most WiFi/cellular?
It also gives them a singular, simple device that won't be confused for personal notifications like a smart phone.
Not everything needs to be bleeding edge. We still use forks and spoons cuz they just work.
I use my hands, even better than forks and spoons.
Hands are essentially just giant sporks
You use your hands because they were better than just your mouth 🤷♂️ (thanks evolution)
I've been told I'm pretty good with my mouth.