If you are using external devices or folders (other than "Music") to synchronise music to your phone, you have to enable access on a Mac software. To do this, go to File > Allow Access to Folder.
- I cannot send or receive multimedia messages on my Lumia phone
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- Can I make Skype calls using my Lumia phone?
- What to check if I can't add or create the Microsoft account on my Lumia phone during the initial setup?
- How do I configure my number to be private when I call someone on my Lumia phone?