Mobile Detect Library

[eluser]pjlasl[/eluser]
I honestly have not used the user-agent library in great depth, but the little I have looked at it, it does not contain all the options the mobiledetect class has.

You can identify between Os (i.e. Android/iOS), phone types (samsung, iphone, etc) and use functions like IsTablet, IsIpad, etc. It is alot more specific and detailed compared to the user-agent class in CI.