Android (currently GrapheneOS, just switched to a Pixel Fold) and postmarketOS (OnePlus 6/6T). I have SIM cards in both of them. Mobile Linux is awesome for pocketable PC and development purposes, but Android is better as a daily driver communication device, so I carry both. I did get Termux set up on my Pixel Fold though and got code to compile there as I want to be able to use the large fold screen for development. Hopefully one day we can run Phosh full screen with GPU accel and full touch input on top of Android.