Rukbat Extreme Android User Dec 29, 2013 #2 The OS is the operating system - in this case, Android, which is a modification of Linux. A custom OS would be one that someone changed from what Google released - to add or change something they don't like.
The OS is the operating system - in this case, Android, which is a modification of Linux. A custom OS would be one that someone changed from what Google released - to add or change something they don't like.
