hello! i just noticed that my iPhone and mac mini will mirror each others wifi connection. i want the mini to use the faster 5ghz signal since the mini is right next to the wireless router, and the iPhone to use the 2ghz signal to take advantage of the broader range coverage around the house. if i change the network on the iPhone to use the 2ghz signal, it will do the same on the mac mini, and if i change it to the 5ghz signal on the mac mini, it will also change it to the 5ghz signal on the iPhone. how do i prevent this from happening? i want the iPhone on the 2ghz signal and the mac mini on the 5ghz.