I have very poor (but existent) cellular coverage in my home. I had no problems with setting Wi-Fi preferred for all of my calls/texting prior to the latest (large) update. Now, I can select Wi-Fi preferred under Wi-Fi calling, however it never seems to save that setting. As I am typing this, I have two outgoing messages that aren't sending (spinning circle) because the phone can't decide whether it wants to use Cellular or Wi-Fi. I want it to use Wi-Fi because I know my Cellular coverage is horrible at my location. I called into customer service today (somehow without a dropped call) and they made some adjustments on their end, however it fixed nothing.
Even after selecting Wi-Fi preferred, I will go back to check a few minutes later and the phone has already switched itself back to Cellular preferred. This is very frustrating. What can I do to ensure that Wi-Fi preferred will be the default setting?
Best answer by tmo_amanda
Unfortunately, this is the first post that I've seen around the Support Community regarding WiFi calling taking a back seat to cellular after updating to Pie. We're still working to get answers on why this is happening and what we can do to fix it. In the meantime, we're using this thread: Official Android 9.0 Pie Discussion Thread to track user-reported issues related to Pie. When we have more info, we'll be sure to post it over on the linked thread.