Connecting direct to an optus supplied cable modem with wifi at mine, an optus supplied NBN modem with wireless at my partners... No router attached to ISP modem set ups...
Re: What's the exclamation point next to the signal strength bars or WiFi?!
Changed both mine and my partners router IP from 192.168.0.1 to 192.168.1.1 and all android, Apple and windows phones/tablets now connect and the exclamation mark is gone...