Why does my iPhone 15 Pro end FaceTime calls after 1 hour and 20 minutes?

FaceTime itself does not impose a strict time limit on calls, so if your FaceTime calls consistently drop at exactly 1 hour and 20 minutes, the issue is likely related to your network rather than device settings.

Check these possible reasons:

1. Router Configuration Issues
   1. Session Timeout or Idle Timeout: Some routers have a session timeout setting that automatically disconnects prolonged connections.
   2. NAT Mapping/Firewall Restrictions: If your router has strict NAT (Network Address Translation) settings, it may terminate the session after a set duration.
   3. QoS (Quality of Service) Limits: Some routers have QoS settings that limit bandwidth for certain applications after some time.
2. ISP (Internet Service Provider) Limitations
   1. Dynamic IP Changes: Some ISPs assign dynamic IP addresses that may change after a set period, potentially disrupting long-running FaceTime calls.
   2. Traffic Shaping or Throttling: Certain ISPs may impose time-based limits on high-bandwidth activities, including video calls, to manage network congestion.
   3. Session Timeouts: Some ISPs automatically terminate long-running connections, especially on mobile data or limited broadband plans.
3. Network Stability & Wi-Fi Issues
   1. Wi-Fi Interference: If you're on Wi-Fi, interference from other devices, network congestion, or weak signal strength could cause the call to drop.
   2. Bandwidth Fluctuations: If multiple devices are streaming or downloading large files, your connection may become unstable.

Possible Solutions:

• Restart your router and check if the issue persists.
• Log into your router settings and look for session timeouts or NAT settings that could be affecting FaceTime.
• Try using a different network (e.g., mobile data or another Wi-Fi network) to see if the issue is network-specific.
• Contact your ISP to check if they enforce session limits or timeouts on long-running connections.