11Q9: What can I do if I can't connect to Wifi ?A: Please turn off the Wifi function of mobile device and reopen it# Make sure that the mobile device if it supports countries in the RT500 set of frequency bands using wifiExamples of practical experience:- - Taiwan NCC announced in January 2015, "Opening 5GBand1: 5150~5250MHz Band Application"http://ee.bureauveritas.com.tw/tw/news.php?KindID=2&ID=240- Therefore, products before 2015 are only available in 5G Band2, 3, 4 and do not support band1.- At present, the frequency bands used by the 5G & 2.4G of the RT500 are all auto channels. Afterthe RT500 is turned on, it detects the usage environment and automatically finds a suitablechannel. So if the mobile device before 2015 is using wifi, if the 5G band 1 selected, it cannot beconnected and there is always a connection error.- Solution:- You can use 5G wifi Band4 channel in APP or Web (band 2, 3 is DFS, EMR3000 and RT500 are notsupported), as follows➢ Log in to APP➢ Press Wi-Fi icon in the upper left corner➢ WiFi Setting➢ Advanced settings➢ 5GHz” Channel Selection”➢ Select any of the "149, 153, 157, 161, 165" channels