I didn't specify this and I'm sorry. The phones I meant are Mobile Phones. We do not use Wireless VOIP. All of our VOIP phones are directly connected to infrastructure.
Our Wireless is used mostly by students.
Student uses would include streaming video, uploads/downloading files from classes, Web browsing, email, online gaming.
We actually have Legacy Mode disabled, and haven't heard a complaint about it yet.
My concern is that we have classrooms with two APs right now. And at this point I am seeing 40-50 clients connecting to those APs. And during those class times I get a few complaints of speeds.
We do have Client Match enabled.