I am considering buying my first smart phone(android). I notice that some phones spec 802.11 b/g while others spec 802.11 b/g/n for wifi. Does 802.11 b/g/n work better than 802.11 b/g for a smart phone or does it matter? I want to use the phone on a 3G/4G network. Does it matter which spec is used for a hotspot?