APs in the 5 Ghz band can hop channels automatically (IEEE N and AC) but APs in the 2.4 Ghz band (IEEE abgn) are locked to the channel they start on. Modern rou

APs in the 5 Ghz band can hop channels automatically (IEEE N and AC) but APs in the 2.4 Ghz band (IEEE abgn) are locked to the channel they start on. Modern routers automatically choose the "clearest" channel when they start up, but they can't change the channel without user intervention. Once the channel changes all the clients would need to rediscover the network and redo the handshake, i.e they would disconnect and maybe reconnect automatically but maybe not.