Hi ​@Melton, 

We’re sorry to hear that you are experiencing issues with Wi-Fi Calling on your iPhone 13 and iPhone 16, especially with calls breaking up during conversations.

Wi-Fi Calling quality can sometimes be affected by network settings, Wi-Fi stability, or how the handset is registering the call over the network. Please try the following troubleshooting steps on both devices:

• Restart both the handset and your Wi-Fi router
• Ensure iOS is fully up to date:
  • Settings > General > Software Update
• Confirm Wi-Fi Calling is enabled correctly:
  • Settings > Phone > Wi-Fi Calling > Wi-Fi Calling on This iPhone
• Toggle Wi-Fi Calling OFF for 2 minutes, then back ON
• Forget and reconnect to your Wi-Fi network:
  • Settings > Wi-Fi
  • Tap the “i” next to your network
  • Select “Forget This Network”
  • Reconnect again

Please also try:

• Disabling VPN services if any are active
• Testing calls on another Wi-Fi network if available
• Moving closer to the router during a test call
• Turning Wi-Fi Assist OFF:
  • Settings > Mobile Service > Wi-Fi Assist

A Network Settings Reset can also help refresh the connection:

• Settings > General > Transfer or Reset iPhone
• Reset
• Reset Network Settings

As the issue is affecting both devices, it may also indicate instability with the broadband/Wi-Fi connection itself rather than the mobile network alone. If possible, testing the calls on another Wi-Fi network would help narrow this down further.

Owethu