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On my phone in Seattle Verizon Wi-Fi calling doesn't work but FaceTime audio does.
by twoWhlsGud 2y ago
On my phone in Seattle Verizon Wi-Fi calling doesn't work but FaceTime audio does.
- runjake 2y agoYep. Wi-Fi Calling is a mix of GRE/IPSec tunnels to carrier servers (which were still functioning during the outage) that then hook into cellular infra on the backend (which wasn't working). On my firewall, I was seeing phones make that GRE tunnel connection, but it was just a gaping void after that. FaceTime does not use cellular infra at all (except as a potential IP network interface)