Guys , I have a dual band router and set two wifi ap -one is 2.3Ghz the second 5GHz. When testing both if them on Samsung Galaxy s4 - the second 5GHz one is almost 40% faster then 2.3Ghz. But when testing them on iPhone 5s (ios 7.1.2) - both ap have the same speed.... anyone that has dual band router and checked the same?