Firefox for Android proxy settings are hidden: #Open about:config in the url bar. # Enter “proxy.http” into the search box on the about:config page. # Tap Modify on “network.proxy.http” and type the proxy server name/ip address into the text box. # Tap Modify on “network.proxy.http_port” and type the port number into the number box. #Enter “network.proxy.type” and enter 1 #Restart Firefox. Another way to manage this on the device is from an app in the Google play store with more features and nobs and whistles. Managed by an add on [https://addons.mozilla.org/en-US/mobile/search/?q=proxy&platform=all&appver=35.0] -too bad Mobile Proxy is no longer available