Fix: Disable Wifi On Screen Off
If you’re a proud owner of a Samsung Galaxy S i9000, you may have noticed a bug with the WiFi not turning off when the screen turns off.
A lot of you may be happy with this bug, since there are many tweaks around for devices where users actually want the WiFi to stay connected when the screen turns off (e.g. when downloading a file).
However, a bug is a bug and when you already have the option in the settings menu to keep the WiFi always on, then not disconnecting when the screen turns off can be annoying. XDA forum member RyanZA, has gotten to the bottom of this and the reality is that the WiFi turn off time has been reset to the Android default of 15 minutes, and that it is possible to change this time yourself.
The XDA member has posted full instructions on how to do this, and you will need adb root shell access and hence familiarity with using adb commands, and SQLite3 Explorer or SQLiteBrowser.
If enough users are finding it tricky to manually apply the fix, RyanZA has stated that the fix can be bundled into a utility to apply the fix for you.
For full instructions, visit the modification thread.