Why can MegaFon detect VPN?
The carrier may detect tunnel signs, IP ranges or unusual connection behavior rather than the service name itself.
If MegaFon shows unstable VPN connectivity, separate carrier issues from client issues first: compare Wi-Fi, LTE and another profile from the subscription.
fresh subscription URL and no stale duplicate profiles
VLESS+Reality and fallback Hysteria 2 behavior
Private DNS on Android and system VPN conflicts
difference between Wi-Fi and mobile data
Refresh the subscription and restart the client.
Test another network or LTE mode.
If it repeats, send support a screenshot and the client name.
The carrier may detect tunnel signs, IP ranges or unusual connection behavior rather than the service name itself.
Yes, but stability depends on region and current filtering. Multiple profiles in one subscription help.