Apple’s iOS 26 drops today, and with it comes a bunch of small tweaks and improvements to how your iPhone works. The catch? A lot of them are opt-in, so you need to turn them on before you can reap their benefits. Here are the settings you should turn on after updating your iPhone to Apple’s latest operating system, although note that some of them require an iPhone 15 Pro or later, as they rely on Apple Intelligence.Adaptive battery modeIf you’re like me, you can never decide whether it’s worth it to swap your phone over to Battery Saver mode. Now, if you have an iPhone 15 Pro or above, your iPhone can make the decision for you.Apple’s new Adaptive Power mode uses Apple Intelligence to intelligently determine when your battery usage is running higher than usual, and makes small tweaks to bring it back under control. These might include slightly dimming your display or slowing down less important tasks, like those that are running in the background or are particularly intensive. Then, once your phone’s been on an even keel for a while, it’ll start turning things back to normal. Think of it as a less aggressive “low power” mode that only affects certain processes, and can make adjustments based on more than your phone’s remaining charge. To try it out, simply navigate to Settings > Battery > Power Mode. Just don’t forget to turn it back off if you find its compromises aren’t worth the extra battery life.Turn on call screening Credit: Apple I’ll be honest—I barely pick up phone calls anymore. Instead, I usually prefer to wait until after the call, and then call back if the caller was someone I knew or if it was important enough to leave a message. This usually works out for me, but I’ll admit, sometimes I do feel a bit bad for leaving people who call me in the lurch, especially if it turns out they had a good reason to dial me up. That’s where Apple’s new Call Screening feature comes in.This one doesn’t require Apple Intelligence, so it’ll work on any iPhone running iOS 26. Simply open your Settings, then under Apps, tap Phone and look for the Screen Unknown Callers option.You’ll have three choices. Never will work just like before, with calls ringing for a bit before they go to your Recents list. But now, you’ve got two additional options you can choose instead.First is Silence, which will turn off your ringer for calls from unsaved numbers, then send them to Voicemail and display them in the Recents list. Essentially, it just cuts out the middle-man of having to wait for the caller to give up before you move on with figuring out what they wanted.But the more exciting addition is Ask Reason for Calling. Choose this, and your iPhone will pick up calls from unsaved numbers for you, then ask the caller a few questions about their reason for calling. You’ll see a transcript of their answers on screen, and then you’ll be able to choose whether you want to pick up.It’s a clever trick, and should make me feel a little less bad for anyone who tries to chat with me over the phone. I do wish it worked for Contacts as well, to be honest, but I can understand why my family might not be enthused to call me and get a robot secretary instead.Try out the new ringtonesWith iOS 26, Apple’s added a few new default ringtones to pick from. Six are variations of the classic “Reflection” ringtone, but there’s also a new one called “Little Bird.” You can find them all under Settings > Sound & Haptics > Ringtone, or check out the embeds below to hear them for yourself. This Tweet is currently unavailable. It might be loading or has been removed. This Tweet is currently unavailable. It might be loading or has been removed. Personally, “Bouyant” is probably my favorite, although my colleague Jake Peterson likes “Dreamer” the most. I’ll probably still stick with my custom ringtone, but if you’d rather not bother downloading a ringtone manually, you now have more choice than ever.Fix Liquid GlassThis next one is technically about turning a feature off instead of turning it on, but I couldn’t ignore it. With iOS 26, Apple’s redesigned its design language to focus on transparency, and not everyone’s a fan. If you remember the transparent bezels Microsoft added to app windows in Windows Vista, it’s a lot like that, but more aggressive. Essentially, instead of showing a solid background, many buttons and overlays will now appear clear, allowing a blurred version of whatever is underneath them to bleed through.Luckily, there’s a pre-existing accessibility control that essentially sets your iPhone back to how it was before. Simply navigate to Settings > Accessibility > Display & Text Size, then toggle on Reduce Transparency. This will bring back solid background across your entire iPhone, which you can see in effect here. Notice how the play button no longer allows blurred album artwork to bleed into it? If you prefer that flatter, more contrast-y look, this could be for you.Custom backgrounds in iMessageThis one’s just fun. Now, in iMessage, you set custom backgrounds for your conversations and group chats on a per-chat basis. These include presets, like Water and Sky, but you can also pick solid colors, choose a photo from your library, or if you have an iPhone 15 Pro or above, generate a background using Apple Intelligence.To get started, open a chat, click its title towards the top of the page, then choose Backgrounds.Note that your chosen background will appear for everyone in the chat, but if you don’t like a background someone else set, you don’t have to live with it. Go to Settings > Apps > Messages and disable Conversation Backgrounds to turn the feature off.Notification summaries for newsIf you have an iPhone 15 Pro or above, Apple is actually bringing back a previously deleted feature with iOS 26: Notification summaries for news and entertainment apps.These initially launched in the iOS 18.3 beta, but were quickly pulled after Apple’s AI had misrepresented some major BBC headlines, including one about United Healthcare shooting suspect Luigi Mangione. Now, Apple is confident enough to bring these notification summaries back, although with a new warning that says “Summarization may change the meaning of the original headlines. Verify information.”If you’re comfortable with that, according to my colleagues over at CNET, you don’t have to do much to turn them on. Apple will actually greet you with a splash screen once you download the iOS 26 update, which will ask your preferences for which apps will get notification summaries. You’ll have three options, and you can select as many as you wish. All other apps will summarize notifications from non-social apps, like Maps, while Communication & Social will throw in notification summaries for apps like TikTok and Mail. These were available already. What’s new (again) is the News & Entertainment option, which will add notification summaries for apps including BBC or Netflix.Simply make your choices, and you’re good to go. If you change your mind later, you can adjust your summaries under Settings > Notifications > Summarize Notifications. You can also adjust notification summaries on a per-app basis here, which isn’t available in the splash screen you get after installing iOS 26.Get clear icons in iOS 26 Credit: Apple Let’s say you actually like Liquid Glass, but think it doesn’t go far enough. In that case, you might want to turn your icons clear too, so you can see your background through them. I promise I won’t judge.To turn your app icons clear in iOS 26, simply long press on your home screen’s background until your apps start jiggling. Then, tap Edit in the top-left corner, followed by Customize. Then, choose Clear. You can also choose between Clear Light or Clear Dark, with the dark mode opting for a more subdued tint.This will make your app icons look like frosted glass, similar to iOS 26’s new lock screen clock. You do you.(If you’re like me, you might prefer the new Tinted Light Mode option instead, which finally allows you to set a custom color for your app icons’ graphical elements alongside a bright background. You can find it in the Tinted option next to Clear while selecting your app icon appearance).New ways to customize your lock screeniOS 26 gives you more control over how your phone looks while locked than ever before. To get started, lock your phone, then press the power button, tap and hold on the lock screen, and tap Customize.First off, you can now adjust the size of your clock by grabbing one of its corners and dragging it down, although this will only work with certain fonts. Second, you can now justify your widgets box to the bottom of the lock screen, as well as add an Apple Music search widget to it, if you like. If you actually start playing something, you’ll notice it’ll enable a large Now Playing interface that shows album art.Finally, there’s support for Spatial Scenes. When selecting a Photo wallpaper, you can now tap on a small icon of a mountain and a sun to separate the photo’s subject from the background. Now, when moving your iPhone, the subject will move with it, to help them pop. Your clock might also move to fill up space in the photo, including slightly behind the subject, to help give an illusion of depth. Or, your widgets might automatically shift to the bottom of the screen if placed elsewhere, to better frame the photo subject.Other settings you can enableThere’s plenty more you can do to make iOS 26 truly yours. If the above changes aren’t enough for you, here are 36 other tweaks you can make to get the most out of your iPhone’s new operating system.