Apple's iMessage and Facetime messaging systems were hit with a glitch Tuesday that took the services offline for several hours.
The problems for both services began shortly after noon Pacific TimeTuesday and continued until after 5 p.m. PT, according to Apple.
iMessage is an instant messaging service and Facetime is a video calling service.
Apple posted a short notice on its website saying “some users” had been unable to make calls or send messages but provided no additional information.
It was unclear how widespread is the outage, but Twitter is seeing tens of messages every minute from users who say they are affected by the problem.
Of the two services, Facetime is the older, having been introduced with the iPhone 4 in 2010. IMessage was introduced a year later when Apple released iOS 5.