How to change a Wireless User/password of Huawei Ont HG8141A5

first of all connect WiFi of Huawei Ont and open WiFi settings in mobile and get IP address of LAN Gateway

192.168.100.1

login user password


telecomadmin
admintelecom

this the default login for the Epon or Xpon Huawei ont's
then Find the WLan and
first option is
SSID is your Wireless User name
WPA pre share key is your Wireless password

change the values and saves

after that
open WiFi settings and login with new password