Scheduled Dark Mode
Apple kicked off the iOS 13 portion of its keynote with a splashy demo of dark mode, a long-requested feature that darkens the iPhone's user interface, providing better contrast and easier viewing at times when you may not want to look at a bright screen.
What Apple didn't say during its presentation was that you'll be able to schedule dark mode to automatically activate at certain times of day. So if you want to switch over to dark mode before going to sleep or first thing in the morning, you can schedule it to do so.
Smarter charging that helps your iPhone's battery last longer
The lithium-ion batteries that power Apple's iPhones and many other smartphones are known to deteriorate over time after a certain number of charge cycles. That's why in iOS 13, Apple is adding a new feature designed to help you get the most out of your iPhone's battery.
With iOS 13, your iPhone's software will reduce the amount of time your iPhone spends fully charged, therefore extending the battery's shelf life. Apple claims the software will learn from your daily habits so that it can wait until you really need the power before charging your phone past 80%.
The ability to choose Wi-Fi networks and Bluetooth devices from the Control Center
Apple's Control Center provides quick access to a variety of handy settings, but you still have to dig into the settings menu to choose a Wi-Fi network or select a Bluetooth accessory. That will no longer be the case in iOS 13, as you'll be able to do both of these things directly from the iPhone's shortcut menu.
Better search in Messages
The search function in Apple's messaging app is getting a big upgrade in iOS 13. When placing your cursor in the search field, Apple will surface content you might want to look for before you type anything, such as recent messages, photos, links, and people. Messages will also categorize search results, and you'll also be able to search individual threads.
Flight status in Maps
There are a bunch of new features coming to Apple Maps later this year, including the ability to view detail information about your upcoming flight. In iOS 13, Apple Maps will display up-to-date data about your flight terminal, gate locations, and departure times.
Oral health tracking
Health was a large focus during Apple's keynote, as the company revealed that new features for tracking women's menstrual cycles, hearing health, and activity trends over time are coming to its products. But the Health app is also getting support for logging oral health in iOS 13, allowing users to monitor time spent brushing their teeth gathered from third-party apps like Colgate in Apple's app.
The option to jump to an already-opened tab in Safari
If you're anything like me, you probably have dozens upon dozens of tabs open in your mobile web browser, making it difficult to keep track of them all. A new Safari feature in iOS 13 will hopefully help with situations like this, considering the browser will soon offer an option to switch to an open tab if you start typing the address of a website that's already launched.
Google's Chrome browser already offers this feature.
New Animoji
Apple emphasized the new customization features coming to its Memoji 3D personalized emoji characters in iOS 13, but it's also launching a few new Animoji too. The update will bring mouse, cow, and octopus-themed Animoji.
More options for customizing how you share photos.
When sharing photos through Apple's share button in iOS 13, you'll have the option to customize certain aspects of the image. For example, if the photo you want to share is a Live Photo but you'd rather share it as a still image, you can remove the Live Photo action. You can also remove the location at which the image was taken when sharing it.
Family members can automatically connect to your iPhone's hotspot
For times during which there's no internet connection available, Apple will offer the option for family members to automatically connect to your iPhone's personal hotspot in iOS 13. Just make sure you register your family members in Apple's Family Sharing feature, which makes it possible to share App Store purchases, Apple Music memberships, and other services with up to five family members.