I have a Pixel phone, currently on Project Fi, and have a WiFi calling question that I need to find the answer to before moving over to T-Mobile. I have very little (unusable) T-Mobile cell coverage at my home, but there is cell coverage in my area; i.e.I'm on the fringe of the coverage area here. So my phone will need to use WiFi calling at home full time on T-Mobile.
My question is, if my phone is always using WiFi calling at home, will my battery go down quickly with the phone trying to find T-Mobile cell coverage all the time? Or will I see normal idle battery usage, and my phone will happily use WiFi for calling and texts, and not be struggling to get usable cell coverage?
I've seen both situations with different cell providers. For example, iPhones that are Verizon at my house always say "Verizon WiFi" on the status line, and the battery usage is normal for an iPhone that has good cell coverage. On the other hand, my Nexus 6P on Republic Wireless would use WiFi calling just fine, but my battery would go down quickly when idle with the phone valiantly attempting to make the unusable T-Mobile coverage usable.
Thanks for you help!