What can cause certain models of cell phones to connect quickly to the internet through a r700 or r600 and others not?

[cesar_murilo]

I work in a college with approximately 10,000 students. During the semester we received some complaints that on the third floor of a block the internet was slow. I went to the building block, and with my Xiaomi Mi Lite 8 I noticed the problem: I was in Connected / No Internet. The AP's of this floor are one AP r600 and another r700.

I thought it might be the traffic. But during the holidays now, with no students, the problem persisted at least in my device. My boss went with me to the place but the internet was fast on his Motorola model phone Moto G4 Plus. The funny thing is that the first complaint came from a student with Motorola Moto G6 Plus.

Does Moto G6 Plus and Xiaomi have anything in common that could be the reason for the connection problem, the model of the cell phone?

We have the Ruckus Zone Director and the Flex Master. What is worth analyzing?

[john_d]

Also try turning off the “directed DHCP” feature. Maybe some phones only accept DHCP packets as broadcasts. Ruckus devices convert broadcast DHCP packets to Unicast to transmit them at higher than the management rate.