Activating flash notifications
Being in a noisy environment makes it nearly impossible to know whether your iPhone received any notifications or not. Even if you leave your phone on the table, you might not hear the ringtone or notice the vibrations. Thankfully, you can turn on visual alerts to grab your attention in deafening situations.
To turn on LED notifications, just head on over to Settings and tap Accessibility. There, open up the Audio/Visual section and activate LED Flash for Alerts. Just like that, your iPhone will shine its bright LEDs to get your attention if you received a notification. This will come in handy if you set your home security system up to alert you via phone notifications.