Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
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Apple Shares New Apple Watch Videos on Fall Detection and Heart Health
The two short videos are tutorials that are designed to walk Apple Watch Series 4 owners through enabling these features. Each one has quick step-by-step instructions detailing how to turn on settings in the Apple Watch app on the iPhone.
Fall detection is a feature that is enabled by default for those who are over 65, but younger Apple Watch Series 4 users must enable it manually. Fall detection uses the gyroscope and the accelerometer to detect a fall, and then it contacts emergency services.
Heart health notifications let you know when your heart rate is too low, too high, or if an irregular rhythm that looks like atrial fibrillation is detected.
Apple has shared several videos in its Apple Watch tutorial series so far, with the aim of introducing people to all of the features available in the Series 4 models.