Why does Skype for Business only work on lte?

Question

Skype

Tell me what could be the problem: Skype for Business connects only via the LTE network. When connected via WiFi, it does not connect, while the Internet on the phone works stably.
Problem on iPhone with latest updates.

Answer 1

Try resetting your network settings.
General -> transfer or reset -> reset -> reset network settings
Probably something with routes