I've had a few incidents where the WAP371 no longer appeared to be broadcasting the 2.4G antenna. I have an old cell phone, Motorola Razr (Android 4.1.2) that I use for testing that and occasionally I've had to reboot the WAP371 because the Razr couldn't find a Wi-Fi connection (there are multiple LG G2s and a new Samsung S5 here as well as tablets and laptops that use the 5G connection without issue). When I try to look at the 2.4 on the other devices they don't see it either. Rebooting the WAP371 by disabling then re-enabling the PoE port on our SG300-10P resolves it. I've not been able to hunt down a time or logical reason why it would happen. I will continue to watch it and report back if it happens again.