So it doesn’t give you an option to choose which default SIM if you just have one sim card. I did find a workaround but it’s not ideal. I had an old Verizon SIM card which I put as my SIM card two slot, and chose T-Mobile for my default sim, now everything works.
Phone: Samsung S8
Problem: Having to choose between phone or wyze app to make each calls.
I tried uninstalling and installing it and the problem went away initially until I gave permission for microphone access for Wyze app. After that the problem started showing up. The voip feature for Wyze app is bug ridden and doesn’t seem to go away having to choose between the apps for every phone calls.
This is actually a setting in your OS\Phone App that needs to be set after adding the Wyze VOIP. Your phone app doesn’t know which you want to use, your carrier account or your new Wyze VOIP to make calls.
On my Moto Android, I opened the phone App, select Settings>Calls>Calling Accounts. There, I tell it that Wyze cannot make calls (turn it off) and that Mint is my Default calling account for making calls.
I wanted to add for anyone still having trouble finding the settings to turn off “wyze” as an option. On my phone (Android 9), I found the settings in the Phone App - Call Settings/Additional Settings/Calling Accounts/All Calling Accounts. It was buried and not the easiest to find.
As others said, this was extremely frustrating. After turning off VoIP in the Wyze app the issue continued. I deleted the Wyze app and it went away, but once I reinstalled the app it returned, even though I didn’t enable VoIP again. The app needs to be able to remove “wyze” as a calling account option if VoIP is disabled or if the app is uninstalled.