So I have had a problem with iPads losing internet randomly during the day at an Elementary school. I have 2 C35 controllers with 3825 aps running firmware version 10.31.04.0009. It seems that everyday almost a bunch of classrooms have there iPads just start spinning while loading something. The iPads are still connected to the AP with good signal, but will not ping gateway or anything until I either disconnect and reconnect from the wifi or do a hard reset on the iPad. It has been a hard problem to trouble shoot because every time it happens I hear about it afterwards or they are working by the time I get there. This problem has become frustrating to teachers and students because it will happen during the middle of testing sometimes also.
I guess I am just wondering if anyone has had similar problems and come up with any solutions. I have opened tickets in the past for this. It seems we change something and it works for a couple days so we assume it is working but then I start hearing the same thing again.
So changing the session timeout did not help the problem. Most classrooms still have to either restart their iPads or just shut off and turn on the wifi to get the connection to wake up. It always happens after waking the iPads from sleep.