I have a Cisco Meraki in a church. It works flawlessly. One SSID with 2,4 and 5 GHz. Same password. But it does differetn things: My BlackBerry 10 is dual band (on WiFi). When I enter the church, first it connects to the 2,4 GHz, and later (after a minute or so), it reconnects to 5 GHz, and stays on...