@a-wai So I did get suspend going on the build and bat life is looking solid - 10% drain in ~ approx. 75 min, so similar to what I saw on KDE Neon* ; that said the LTE modem doesn't come back online. Are you in the dev chat? - if not, perhaps consider joining and talking to Bhushan about how he got the modem to (mostly) stay online during suspend? I am pretty sure that, basically, USB 2.0 remains active in suspend with whatever tweak KDE Neon uses.
*This isn't super accurate because the battery discharge isn't linear. I expect the bat life is 10-12 hrs.
*This isn't super accurate because the battery discharge isn't linear. I expect the bat life is 10-12 hrs.