Those following the modding community will know that many modifications involve tweaking the build.prop file. Changing its contents can alter your device ID and give you access to market apps you normally wouldn’t have. Furthermore, it can increase your RAM usage, battery life and even make your data speeds go up a little bit.
XDA Senior Member TheFrankenstain has released a number of build.prop tweaks for the Samsung Galaxy SL i9003 for anyone who wants them—be it a developer who wants to add to their ROM, or a user wanting to tweak his or her system just a little bit more. To apply the tweaks, simply use your favorite root file explorer, find the build.prop file, and edit it. After that is accomplished, save and reboot the device. Be sure to make a backup of the original build.prop file, just in case something goes wrong.
It should be noted that build.prop tweaks are not entirely device specific. Some of these tweaks may work with other phones as well. While it would be prudent to make backups before attempting, feel free to give these a try on any device. The worst case scenario is you’d just have to restore your backup if anything goes wrong.
For those still rocking the Galaxy SL who want to do some homespun tweaking, you can check out the original thread for all the tweaks listed. Additionally, some users have added tweaks in the replies, so be sure to browse around and see all there is to see._________