I spoke with customer care via chat. They asked me to toggle the data roaming switch in settings. I seem to remember this fixing a Sprint roaming issue I had with a different Android device I owned many moons ago. I bet this fixes the problem. I'll be in Hermann Missouri this weekend to test. I'll report when I get back.
They also had me update profile / prl / reboot ... but I'd already done that. I'm gonna bet this roaming turn-it-off-and-back-on-again thing actually works.
I just picked up my replacement Max and now I'm waiting for my watch to stabilize (first gen real slow) so I can unpair it (you have to back up/unpair any watches first) then iTunes backup the old X then new iPhone recovery....
I just got my Galaxy S9 within the past week. I am running SCP. The results are interesting. It seems to stay stable on Sprint B25, but it does see on the report some other B25,B26 and sometimes a B41 neighbor cells all with only slightly higher negative numbers.
This is all when WiFi is disabled on the S9. My WiFi is 5 GHZ running anywhere from 260 Mps to 650 Mps. I have for short periods seen WiFi faster speeds.