If your iPhone 16 isn't buzzing, lighting up, or showing alerts when you get a new message or app notification, it's easy to miss important stuff. This is a common hiccup with iOS 26, but it's usually something you can sort out yourself in a few minutes.
Let's start with the quickest fix that often does the trick. A simple force restart can clear out temporary software glitches that are blocking notifications. On your iPhone 16, press and quickly release the Volume Up button, then press and quickly release the Volume Down button. Finally, press and hold the Side button until you see the Apple logo appear, then let go.
Check Your Focus Modes
Focus modes are incredibly useful for silencing distractions, but they can sometimes stay on when you don't want them to. Swipe down from the top-right corner of your screen to open Control Center and take a look. If you see a moon icon or a Focus name like "Work" or "Sleep" highlighted, tap it to turn it off.
You can also check and manage all your Focus settings by going to Settings > Focus. Make sure the specific Focus isn't set to silence notifications from the apps you're missing.
Review Notification Settings for the App
Sometimes, the issue is specific to one app, like Messages or Mail. Head to Settings > Notifications. Scroll down and tap on the app that's not alerting you.
Make sure "Allow Notifications" is toggled on at the top. Then, check that the alert style is set to something other than "None." I'd also ensure "Sounds" and "Badges" are enabled if you want those cues.
Disable and Re-enable Notifications for the App
If the settings look right but you're still not getting alerts, try toggling them off and on. Go back to Settings > Notifications, tap the problematic app, and switch "Allow Notifications" off.
Wait a few seconds, then switch it back on. This acts like a mini-refresh for the app's notification system within iOS.
Check Do Not Disturb and Silent Mode
These are two separate things that can quietly stop all alerts. First, check the Action button on the left side of your iPhone 16, which replaces the old Ring/Silent switch and mutes the ringer by default. Press and hold the Action button and watch the on-screen banner, if it shows Silent mode is on, press and hold it again to turn silent mode off. You can also tap the Silent Mode toggle in Control Center.
Next, open Control Center by swiping down from the top-right. If the crescent moon icon is purple, Do Not Disturb is active. Tap it to disable it.
Ensure the App Can Refresh in the Background
Some apps need background activity to fetch new data and trigger notifications. Go to Settings > General > Background App Refresh. Make sure Background App Refresh is turned on at the top, either for Wi-Fi & Cellular or just Wi-Fi.
Then, scroll through the list and ensure the toggle is enabled for the app in question. If it's off, the app might only check for new content when you open it.
Update the App and iOS
An outdated app can have bugs that break notifications. Open the App Store, tap your profile icon in the top right, and scroll down to see if any updates are pending for the app you're having trouble with.
More importantly, a system update can fix broader notification issues. Go to Settings > General > Software Update. If an update for iOS 26 is available, installing it can resolve known glitches.
Reset All Settings
This is a more comprehensive step if the simpler fixes haven't worked. It will reset all your system settings, like Wi-Fi passwords, wallpaper, and privacy permissions, back to default without deleting any of your personal data or apps.
Go to Settings > General > Transfer or Reset iPhone. Tap "Reset" at the bottom, then choose "Reset All Settings." You'll need to enter your passcode to confirm. After your phone restarts, you'll need to reconfigure things like Face ID and Wi-Fi networks, but it often clears persistent notification problems.
Check for Notification Summary or Scheduled Delivery
iOS has features that bundle non-urgent notifications. Go to Settings > Notifications > Scheduled Summary. If this is on, notifications from selected apps will only be delivered at the scheduled times you set.
Also, within an app's notification settings, look for a "Delivery Schedule" or "Scheduled Delivery" option. Some apps, like Mail, let you set specific quiet times where notifications are paused.
Sign Out and Back Into Your Apple ID
Since iCloud syncs notification settings across your devices, a hiccup with your account can sometimes be the cause. Go to Settings > [your name] at the top. Scroll all the way down and tap "Sign Out."
You'll be asked to keep a copy of your keychain, contacts, and other data on the iPhone, that's fine. After signing out, restart your iPhone 16, then go back to Settings and sign in with your Apple ID again.
Check Third-Party App Permissions After an Update
I've seen cases where a major iOS update can subtly reset certain permissions. It's worth revisiting the app's notification settings even if you've checked before. Go to Settings > Notifications, tap the app, and just double-check every toggle, especially for Lock Screen and Banners.
If the app uses critical alerts (like for medical or security apps), there's a separate setting for that called "Critical Alerts" which you'll need to enable.
