My wife's Note 8 has been updated to Android Pie seems to always want to be in roaming mode. LTE will flash briefly. I have a Note 9 and have no issues when we are at home. I tried all of the update PRL and Network tricks, but no luck. We also called the Sprint support line and no luck there. Is this due to Android Pie? Also, he phone is now unlocked (we did buy it from Sprint). I'm in Austin, TX.