Question: What ios does the ipod touch 4th generation have?
Disambiguated questions and answers: question: What iOS does the original iPod touch 4th generation have?
What iOS does the white model ipod touch 4th generation have?
What iOS does the ipod touch 4th generation that was released on February 21, 2014 have?
answer: iOS 4.1
iOS 5
iOS 6.1.6
Natural Questions answer: Apple A4 (from the Wikipedia article "iPod Touch")