ISP replaced failed Alcatel fiber router with a Nokia Dual Band router. Both 2.4GHz and 5GHz bands. iPad Air2 and new iPad 5th Generation both connect to the 5GHz band with no problem. iPhone 6 connects to 5GHz as well. Original, ancient iPad (still going strong) and iPhone 5 only connect to 2.4GHz band, as expected. But there's an iPad 4 that sees the 5GHz band but will not connect to it. Since the performance of the 5GHz band is so much better, wifey is telling me to connect her to the 5GHz band, like her phone. Is it possible? I would think that if it sees it, it should be able to connect. As you can tell, I know very little of iPad internas. Thanks in advance for any ideas.