The first step: first connect the iPhone 4S to the computer with a data cable, and then open the itunes software on the computer

The second step: then click on the video (music) on the left side of the itunes software ) icon, then click the File menu and select Add files to library

Step 3: After selecting movies and music in iTunes, the resources that have been added synchronously will be displayed, and then you can start adding New videos and music. Finally, we choose to add files to the library in the "File" menu at the top of the software. To add data (music or video), you can choose to add the entire video folder to the library, and then select the files to be added on the computer. File or folder can be used to select the video or music file downloaded on the computer. We click Open at the bottom, and then click the sync button on iTunes to complete placing the downloaded video or music in the iPhone 4S. It is very convenient and simple. It only takes four steps to complete.

Warm reminder: The above four steps are how to use itunes to synchronize music and movies to iPhone4S. It is actually very simple, as long as you understand the steps. It should be noted that currently iPhone only supports mp3, aac, Common music formats such as wav, only lossless music formats such as flac and ape are not supported. You need to install a third-party player or format conversion before operating.