Android 2.3 WIFI proxy settings

On some Android 2.3.X phones(e.g. my Acer Liquid Metal S120, WIFI proxy settings are missed in WIFI settings. The work around are below:

Install from Google Play, or if you dont have internet connection you can download the apk from http://ftp.opera.com/pub/opera/android/mobile/1200/ on another computer, transfer to your phone and installed it
Open the Opera browser app, in the URL field, type opera:config, at this time the Preferences Editor should have opened in your screen.
Scroll down to proxy menu, in the HTTP Server and HTTPS Server, enter your proxy setting with the following format <Proxy IP>:<Port>. E.g. 192.168.1.1:3128

Options 2: Install "HTTP proxy settings" app in Google play. (It may not work on some phones.)

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