Manually syncing music from iTunes on a refurbished Mojave MacBook Pro to iPhone 8

You cannot adjust the other options until you check the Sync Music box. Nothing happens immediately so you can review your decision before you commit. If this is a new to the iPhone library iTunes will likely want to erase and replace existing media content on device. Are you OK with that or is there media on the device that isn't in the library? See Recover your iTunes library from your iPod or iOS device - Apple Community if required.

tt2

Hi,

Have you tried checking Sync music box?

Use iTunes to sync your iPhone, iPad or iPod with your computer – Apple Support.

Jim