Samsung announced that they wouldn't be bringing Android KitKat to their
aging Samsung Galaxy S3 smartphone, but that didn't stop the XDA and
Android hacking community from porting it over anyway. As long as you
don't have an issue with rooting your device and following the
instructions on the forum (posted in the source link below), then you'll
be able to enjoy KitKat on your S3.
However, as with most custom ROMs, the KitKat ROM for the S3 isn't perfect. There are still some stability and usability issues, and not all features of the phone may function properly. Users may experience some glitches as well. However, if nearly all previous custom ROMs are any indication, the KitKat S3 ROM will get better with time as the community continues to work out the kinks. The community should be a large one as well, considering that the Galaxy S3 is an extremely popular handset and its user base was livid when they discovered that Samsung wouldn't be porting over Google's latest iteration of its mobile OS to their beloved device. It's interesting to note that the KitKat ROM file is too large to fit onto the Galaxy S3's internal storage; Samsung's pre-loaded bloatware is primarily to blame. Once it was removed, the hackers were able to successfully port it without any storage space issues.
However, as with most custom ROMs, the KitKat ROM for the S3 isn't perfect. There are still some stability and usability issues, and not all features of the phone may function properly. Users may experience some glitches as well. However, if nearly all previous custom ROMs are any indication, the KitKat S3 ROM will get better with time as the community continues to work out the kinks. The community should be a large one as well, considering that the Galaxy S3 is an extremely popular handset and its user base was livid when they discovered that Samsung wouldn't be porting over Google's latest iteration of its mobile OS to their beloved device. It's interesting to note that the KitKat ROM file is too large to fit onto the Galaxy S3's internal storage; Samsung's pre-loaded bloatware is primarily to blame. Once it was removed, the hackers were able to successfully port it without any storage space issues.