Huawei HG8245Q STC Default Router Login change wifi password 4 fallow simple steps to change Modem Huawei HG8245Q STC 1-coneect modem with computer or Mobile. (If medem connect to computer or laptop reguire LAN cable). Connect modem with mobile wify Make sure connect with router and mobile phone wia wify. 2- Open any Brouser in Mobile phone like opera mini, fire fox, uc brouser charom,. Here i use google charom Brouser . Type 192.168.100.1 in address bar in brouser .