My Lenovo Y700 does passthrough power. It also has a mode where it only starts charging if the battery is below 40% and it'll stop at 60%
Unfortunately its not a phone. Its a mini tablet. But I find the size ideal for daily use - browsing，reading pdfs, small sketches . (no SIM slot though)
My sample size isn't big, but on Linux every laptop I've seen has amazing battery reporting information galore. Oh sure battery level. And various assessments of wear. Things like realtime charge or discharge rates.
But more notably, I think around half also have charge control. It's just been on/off. But it would be a pretty basic bash script to make this happen.
I have a Huawei Mate book 16 and under KDE (Ubuntu) I can set a charge limit in the energy settings
But it depends on the laptop. From what I understand not all laptops have the drivers for power control ie. the ability to from-software tell the laptop to stop charging
Unfortunately its not a phone. Its a mini tablet. But I find the size ideal for daily use - browsing，reading pdfs, small sketches . (no SIM slot though)