The cause of the outage remains unclear.
Services facing issues also include Apple Books, Apple Card, iCloud Web Apps, Weather and Podcasts.
Apple said some users may not be able to use Apple Card for web transactions, apply on the web, or access card.apple.com.
On Monday, Apple Music, iCloud storage service, Apple TV and Apple Store
were down briefly, according to Downdetector.com, which collates status reports from sources including user-submitted errors.
Discover the stories of your interest