Thanks a lot! That's literally the only combination I *hadn't* tried. Now it's working well, without the need to toggle off 4G! This is great, maybe I was overthinking it. LOL Still going to monitor ofono and see what happens. Edit: most of my problems seem to be stemming from the fact that, up until very recently, I had to use the 3G APN's for my area, as some parts of Chicago are heavily saturated on the 4G bands, so I didn't mind resigning to the 3G bands which were actually faster. Hey, this works, and maybe I was wrong about the ofono bug. More of a glitch than a bug, and limited to a very small set of conditions. Thanks again, @paulwk, and @karlos devel for suggesting it.