Pixels on Android 11 Drop WiFi Calls with Microphone Sharing Error Message

Symptoms

• WiFi calls are dropped and may receive an inbound call appearing to be "from" the other party, reconnecting the original call
• Outbound WiFi calls may fail to set up
• An error message indicating that another app is using the microphone and won't share may be displayed

Environment

• Pixel phones
• Android 11
• WiFi calling

Resolution

1. Open the Google Play Store app
2. Tap 3 horizontal lines in the upper left corner
   • You may instead see a circle in the upper right corner, with either your Google account photo (if you have one) or a letter of your name - tap this instead if that's an option on screen
3. Tap My Apps & Games
4. If there are updates available, tap Update all
5. Should issues persist thereafter, reinstall the Phone app updates
6. Uninstall and reinstall the Republic Wireless App