Last updated: October 2026
A new iPhone, or a fresh iOS update, ships with settings tuned for everyone, not for you. A handful of switches protect your data, stretch your battery and cut down on annoyances. This list covers ten of them, with the menu path for iOS 27, which Apple released on September 14, 2026. Where a path comes from iOS 27 coverage rather than an Apple support page, the text says so.
If you only have five minutes, do these four: turn on Automatically Install updates, check that Stolen Device Protection is on, set a charge limit (iPhone 15 or later) or Optimized Battery Charging, and fill in your Medical ID. The rest are comfort and privacy upgrades.
| # | Setting | Path (iOS 27) |
|---|---|---|
| 1 | Automatic updates | Settings > General > Software Update > Automatic Updates |
| 2 | Stolen Device Protection | Settings > Face ID & Passcode > Stolen Device Protection |
| 3 | Charge limit | Settings > Battery > Charging |
| 4 | Ask apps not to track | Settings > Privacy & Security > Tracking |
| 5 | Precise Location per app | Settings > Privacy & Security > Location Services |
| 6 | Medical ID and Emergency SOS | Settings > Emergency SOS, then Health > Medical ID |
| 7 | Separate alarm volume | Settings > Sounds & Haptics > Alarms and Timers |
| 8 | Liquid Glass slider | Settings > Appearance > Liquid Glass |
| 9 | App permission review | Settings > Privacy & Security |
| 10 | Power Mode and battery insights | Settings > Battery |
1. Turn on automatic updates
Go to Settings > General > Software Update > Automatic Updates and turn on Automatically Install. According to Apple, your iPhone then downloads and installs updates overnight while charging and on Wi-Fi, and notifies you before installing. If you would rather install yourself, turn on Automatically Download instead, which appears only when Automatically Install is off. Apple's page also covers a separate System Files option for updates that improve features without changing your iOS version.
Catch: an overnight install needs power and Wi-Fi, so leave the phone on its charger at least once in a while.
2. Check Stolen Device Protection
Open Settings > Face ID & Passcode, enter your passcode, tap Stolen Device Protection and turn it on. Apple says it may already be on by default, so just check. Away from familiar places such as home or work, some actions need Face ID or Touch ID with no passcode fallback (for example using saved passwords and passkeys, or erasing the iPhone), and changes to critical settings like your Apple Account password or passcode wait for a one-hour security delay.
Requirements (Apple): iOS 17.3 or later, two-factor authentication for your Apple Account, a passcode, Face ID or Touch ID, Significant Locations turned on, and Find My on. You can't turn Find My off while the protection is on.
3. Set a charge limit
On iPhone 15 and later, go to Settings > Battery > Charging and pick a limit from 80% to 100% in 5% steps, per Apple. On iPhone 14 and earlier, go to Settings > Battery > Battery Health & Charging and use Optimized Battery Charging, which Apple says learns your routine and delays charging past 80% when it predicts a long charge. Optimized charging only works when the limit is 100%, and needs about two weeks to learn your habits.
Catch: the iPhone still charges to 100% now and then to keep its battery estimate accurate, so a limit is not a hard cap. Apple's page for this was last dated December 2025 and does not mention iOS 26 or 27.
4. Ask apps not to track you
Open Settings > Privacy & Security > Tracking. Switching off Allow Apps to Request to Track means apps cannot show tracking prompts; Apple says every app that asks is treated as if you tapped Ask App Not to Track, and apps cannot access the advertising identifier. You can also turn permission off for individual apps in the same list.
Catch: this controls cross-app tracking requests, not everything an app collects inside itself. Child accounts and managed devices may not be able to change it.
5. Turn off Precise Location for most apps
Go to Settings > Privacy & Security > Location Services, tap an app, and choose Never, Ask Next Time Or When I Share, While Using the App or Always. Then turn Precise Location off where an approximate area is enough, such as weather or news apps. Apple says that with Precise Location off, the app only gets your approximate location.
Catch: navigation and ride apps need precise location to work properly. Leave it on for those.
6. Fill in Medical ID and check Emergency SOS
This one is about safety, not comfort. Open Settings > Emergency SOS, set up your emergency contacts, and complete your Medical ID in the Health app with Show When Locked on. Our full walkthrough, with Apple's steps for satellite SOS and Crash Detection, is in how to set up iPhone Emergency SOS.
7. Give alarms their own volume
In iOS 27, go to Settings > Sounds & Haptics > Alarms and Timers and turn off Match Ringtone Volume to reveal a separate alarm slider. That way a silent-ish ringer no longer means a quiet alarm. iOS 27 coverage from iThinkDifferent and Techlicious both describe this path; the Wake Up alarm in your Sleep schedule keeps its own volume setting.
8. Tune Liquid Glass to your eyes
iOS 27 moved the look-and-feel control into a new menu: Settings > Appearance > Liquid Glass. MacRumors describes a continuous slider that replaces the two-option Clear and Tinted choice from iOS 26.1, with a live preview as you drag. Move it toward clear for more transparency, or toward frosted if text is hard to read. For the most solid backgrounds, Settings > Accessibility > Display & Text Size has Reduce Transparency and Increase Contrast.
9. Review app permissions
Open Settings > Privacy & Security and go through the individual sections, such as Camera, Microphone and Photos. Remove access from apps that no longer need it. It takes a few minutes and is one of the most effective privacy checks on the phone.
10. Look at Power Mode and battery insights
Open Settings > Battery. Power Mode lives at Settings > Battery > Power Mode. iThinkDifferent reports that iOS 27 also points out poor cellular signal as a battery drain; I could not confirm that on an Apple page, so treat it as reported. If your battery drains fast, also see how to free up iPhone storage without deleting your photos, since a nearly full phone feels slow.
Catches and limits
- Menus moved in iOS 27. The iThinkDifferent guide says the old "Apple Intelligence & Siri" menu is now just "Siri", and the Liquid Glass control sits in the new Appearance menu. If a path above looks different on your phone, search Settings for the setting's name.
- Not every setting exists on every iPhone. Charge Limit needs iPhone 15 or later; Apple Intelligence features need newer hardware.
- Change one thing at a time if you are troubleshooting, so you know which switch made the difference.
FAQ
Should I turn off Stolen Device Protection because of the delay?
Apple's design is that the delay only applies away from familiar locations. At home or work, you can change settings normally.
Will a charge limit hurt performance?
Apple's page describes it as a way to stop charging near your chosen level. It does not describe a performance cost.
Do I need iOS 27 for these?
No. Settings 1 to 6 and 9 exist on earlier versions too, but menu names and locations can differ. Items 7, 8 and 10 as described come from iOS 27 coverage.
My verdict
Start with updates, Stolen Device Protection, the charge limit and Medical ID. Those four protect your data, your battery and, in an emergency, you. Then spend ten minutes on tracking, location and permissions. The appearance and alarm tweaks are optional but make iOS 27 more pleasant day to day.
What I could not verify: I could not reach Apple's official current pages for notification previews and Auto-Lock, so those are not on this list. The alarm volume, Liquid Glass slider and Power Mode details come from iOS 27 coverage (not an Apple page), and Apple's charge limit page predates iOS 26 and 27.
Sources: Apple: About Stolen Device Protection for iPhone | Apple: About Charge Limit and Optimized Battery Charging | Apple: Update your iPhone or iPad | Apple: If an app asks to track your activity | Apple: Turn Location Services on or off | iThinkDifferent: 10 Settings to Change After Installing iOS 27 | Techlicious: Four iOS 27 settings | MacRumors: Tone down Liquid Glass transparency