Looks interesting and is called the beepberry/beep. Looks like a rpi0 with a addon that has a paper screen + qwerty keyboard.
Some articles about it:
https://www.theverge.com/23727218/beepberry-cyberdeck-mini-computer-raspberry-pi-beeper-messenger
https://www.jeffgeerling.com/blog/2023/messing-beepy-formerly-known-beepberry
It took so long for modern smartphones to catch up to what I could do on the Treo.