Download and install this free SynciOS Manager tool on your computer, and connect your iPhone X to the computer via USB cable. Step 2. After your iPhone X connected successfully, click on Media button on the left panel. To import music to iPhone X from your computer, click on Add button and then select the songs from computer. You are able to. Jun 01, · A video after a long time showing you-How you can download unlimited music directly on your iDevice. If this video was helpful, be sure to leave a like and SUBSCRIBE for a whole lot of videos Author: Apple's Baymax.