Question: are all devices 5ghz compatible?
Answer: x If a device shows only b/g/n, it does not support 5 GHz. x If a device shows a/b/g/n/ac, it does support 5 GHz. x Many smart phones, including iPhone models 4 and 4S, are not 5 GHz-compatible. x Most Samsung phones are 5 GHz-compatible.