Bookmark the working IP address once you find it. Local hostnames like device.webui are convenient but not 100% reliable across all devices and operating systems.
Instead, device.webui is a used almost exclusively by embedded devices (like routers, smart home hubs, security cameras, or NAS drives) to provide a setup page. device.webui
device.webui is not a standard, universal web address or a built-in feature of Windows, macOS, Android, or iOS. You will not find it by typing it into Google Chrome on a standard laptop. Bookmark the working IP address once you find it
nmap -sn 192.168.1.0/24 # scan your local subnet Log into your main router (e.g., http://192.168.1.1 ) and look for "DHCP Clients" or "Attached Devices". On Phone (iOS/Android): Install Fing (free app) → scan network → find the device by manufacturer. device