Parents are liking 'land line phones' for their kids. These are physically like the landlines used in the 80s and 90s, but are often digital software inside. Parents have concerns about the amount of screentime. Also, without screens you don't have pictures, which solves about 90% of the issues of cellphones.
These products could be improved by being able to set up (with the push of a button) a network, and you can add people to it individually, and it is not provided by a company (like a big data SM company) and it is limited to the network you create, so you can add your people an no spam calls, no strangers.