The iPhone 11 Pro maxTodd Haselton | CNBCApple rolled out its big new iPhone update recently. It’s called iOS 13 and includes a bunch of new things you can do. Some of them are hidden, so it’s just a matter of knowing where to look.There’s a keyboard that lets you swipe to enter text, for example, and a new dark mode that you can set to automatically turn on at night. There are fun new Memojis you can design to make look like yourself. And you can connect two pairs of AirPods to the same iPhone.Here’s a bunch of secret little tricks in Apple’s big new iPhone update.Connect two pairs of AirPods to the same iPhoneThe new model on the left looks almost identical to the old model on the right. Note the new charging indicator light on the left.Todd Haselton | CNBCNow you can connect two pairs of AirPods (or Powerbeats Pro headphones) to the same iPhone. This is useful if you’re traveling with someone and you want to share your music or watch the same movie. To set it up, just do this:Open the charging case lid and hold the pairing button on the back of your AirPods until the light starts to flash white.Bring it close to your iPhone.Tap the pop-up menu confirming you want to pair the AirPods to your iPhone.Now repeat those steps to connect a second pair.Start playing music.You’ll hear tunes through one pair of AirPods.Now tap the AirPlay button.Choose the second pair of AirPods you connected.Music should be playing in both sets of AirPods at the same time.Turn on Dark ModeDark mode in the iOS 13 beta on my iPhone.Todd Haselton | CNBCDark Mode is a new option that lets you set the theme of the phone, and apps that are built to support it, to show darker backgrounds and colors. It’s easier on my eyes at night, since there are fewer bright white colors, but it also just looks cool. There are two ways to turn on Dark Mode. The easiest way is to do this:Swipe down from the top-right of your iPhone’s display (or up on an iPhone that has a home button.) This opens the Control Center menu.Tap and hold the screen brightness toggle.Tap the “Dark Mode” toggle on the bottom left.You can schedule Dark Mode to turn on at specific times by doing this:Open Settings.Choose Display & Brightness.Under Appearance, select Light or Dark mode.Toggle “Automatic” to on.Choose a custom schedule or set Dark Mode to turn on automatically at sunset and off at sunrise.Share your phone’s hot spot with the familyAutomatically share your phone’s data hotspot with family members in iOS 13.Todd Haselton | CNBCYou can use your iPhone as a Wi-Fi hot spot (if you have phone hot spot data included with your wireless plan) and automatically share it with your family members. This is good if you’re somewhere without Wi-Fi, say an airport, and your kids want to connect their tablets to the internet. Here’s how to turn it on:Open SettingsTap “Personal Hotspot”Choose “Family Sharing.”Select the family member you’d like to share with.Now choose “automatic” or “ask for approval.”If that family member sees your phone as a hot spot, they can connect either automatically or once you approve them.Swipe on the keyboardYou can swipe across the keyboard to type by default in iOS 13.Todd Haselton | CNBCI still like to tap on my keyboard to type, but some people prefer swipe keyboards. IOS has supported third-party versions of this, which let you swipe from letter to letter to create a word, but iOS 13 now builds it into the keyboard automatically. Just open the keyboard anywhere, like in Messages, and swipe your finger across the keyboard to form a word. It takes some getting used to, and some people can type faster this way once they adjust.Hide your location from appsThe update will automatically remind you if apps are using your location or Bluetooth connection. Sometimes you might not want an app to always track your location in the background, so now you can choose to set it to “only while using” when Apple reminds you.It looks like this:You can always adjust this manually doing this:Open Settings.Choose Privacy.Select Location Services.Tap an app.Choose “while using,” “always” or “never” track your location.Use a PS4 or Xbox controller with gamesPlay games with a PS4 or Xbox One controller in iOS 13.Todd Haselton | CNBCThe software now supports Bluetooth PS4 and Xbox One controllers. This is one of my new favorite features, since it lets me use my PS4 controller on the road while streaming games from my PS4 at home. But the controllers also work with some games in the iTunes App Store. To set it up, do this:Put your Xbox controller into pairing mode by turning it on and then holding the pairing button on the back until the front light begins flashing quickly.Or put your PS4 remote into pairing mode by holding the Playstation button and the share button for about three seconds.Open Settings on your iPhoneChoose Bluetooth and turn it on.Select your controller from the list of Bluetooth devices ready for pairing.Wait until it says the controller is connected.Launch a game with controller support. Many are listed here, and some new ones are in Apple Arcade.Long press in Control Center to connect to a specific Wi-Fi networkChoose a Wi-Fi network from Control Center in iOS 13.Todd Haselton | CNBCHere’s another hidden trick: You can long press inside Control Center for even more options. My favorite is using this for connecting to a specific Wi-Fi network without having to open settings. It also works for Bluetooth devices. Just do this:Swipe down from the top-right of your iPhone’s screen to open control center. (Or swipe up on models with a home button.)Tap and hold the Wi-Fi icon (or any other icon).Tap and hold Wi-Fi again.Select the network you want to connect to.Share your ETA in Apple MapsShare your ETA from Apple Maps in iOS 13.Todd Haselton | CNBCIOS 13.1, a small update that rolled out this past week, now lets you share your ETA with friends or family from Apple Maps. So, if you’re driving somewhere, they can follow along with you on the map and know that you’re safe and when you’ll arrive. To use it, do this:Open Apple Maps.Set a destination and get directions to it.Tap “Go.”Tap the bottom of the maps screen.Choose “Share ETA.”Pick your contact.They’ll get a text message with your ETA and, if on an iPhone, a detailed view.Make your Memoji look like youPick your headwear. There’s a lot to choose from!Todd Haselton | CNBCYou can now make your Memoji look more like you. These are the fun animated videos and still photos you can send to people and are basically just emojis that are made to represent your personality. To edit your Memoji, do this:Open the keyboard in Messages.Tap the monkey icon on the top menu bar.Tap Edit.Change your hairstyle and skin color, add accessories like AirPods or add headwear.Check out the new Apple Photos ‘Day’ viewCheck the new “Days” tab in Apple Photos on iOS 13.Todd Haselton | CNBCI use Apple Photos and Google Photos to back up my pictures. But I really love the new “Day” view in Apple Photos, which shows the best pictures and video clips I took on a certain day. Apple will show some pictures it thinks are important, like portraits of people. And video clips are played, too, making the gallery feel alive. Here’s how to see it:Open Photos on your iPhone.Tap the “Days” tab on the bottom.Scroll through some recent days.Watch some of your memories come to life.Take a new ‘high-key light mono’ Portrait pictureMe in the new high-keyTodd Haselton | CNBCPortrait mode was launched a couple of years ago to let you take professional-looking pictures. Apple blurs the background using a “bokeh” effect. There are a few different portrait mode options that change the lighting in your pictures, but a new one in iOS 13 is called “high-key light mono.” It takes a black-and-white picture and makes the background completely white. It can make even a sloppy blogger look cool, as the photo above shows.Here’s how to take your own high-key light mono portrait:Open the camera app.Choose portrait mode from the menu.Slide your finger through the options to “high-key light mono.”Now snap a picture of someone.Optimize your charging so your battery ages betterThe new Optimized Battery Charging feature in iOS 13.Todd Haselton | CNBCApple has a new “optimized battery charging” option in iOS 13 that will keep your battery healthy so that it doesn’t age as quickly. This doesn’t mean more battery life right now, but it means your battery might not need to be replaced as quickly. It will stay in tip-top performance longer. Apple explains it like this: “To reduce battery aging, iPhone learns from your daily charging routine so it can wait to finish charging past 80% until you need to use it.”To turn it on, do this:Open Settings.Choose Battery.Tap Battery Health.Toggle “Optimized Battery Charging.” to the on position.MoreiOS 13Todd Haselton | CNBCThere’s more to find. IOS 13 includes improvements to battery life, new accessibility options, support for faster Face ID and other changes. It’s a big update and worth switching to if you haven’t moved from iOS 12 yet.