Check your software. If you have a brand-new Apple device, or have upgraded an older device, check to see you have the latest software:

• iOS 12.1.2 - for iPhones and iPads
• watchOS 5.1.2 - for Apple Watch
• macOS Mojave 10.14.2 - for Macs
• tvOS 12.1.1 - for Apple TV
• Safari 12.0.2 - for macOS Sierra, macOS High Sierra, macOS Mojave