To download iTunes for your on a computer, you should generally aim for . While newer versions of iTunes are typically backward compatible with older devices like the 4s, the specific version you need may depend on which iOS your phone is running. Recommended Versions for iPhone 4s

: You need at least iTunes 10.5 to recognize and sync an For iOS 9 users : If your

is updated to its maximum firmware (iOS 9.3.5/9.3.6), it is recommended to use at least for full compatibility.