Q: Where to go after Sailfish?
A: Lenovo IdeaPad Duet 3 10IGL5-LTE
Has SIM card slot and built in 4G cellular modem, 1920 x 1200 px 10" touchscreen, detachable physical keyboard (also usable wireless by BT), Intel CPU, a tiny but full featured PC running Ubuntu 23.04, works like a charm! Fits easily into a handbag.
edit: Sometimes I need a magnifying glass, but everything works like on a ‘big’ desktop PC.