jeffreii
CrackBerry Convert
I ended up selling my S3 and jumped to the N4. I have no issues with swiftkey staying default keyboard on the N4. It has to be a Samsung/ATT software issue.
Your Nexus 4 is probably on 4.2.2...as mentioned, this issue is with 4.1 and has been fixed in 4.2...so that's why you don't have the issue.