A push notification is a message that appears on your device without you asking for it
A push notification is a short message sent from an app or website directly to your phone, tablet, or computer. It arrives whether the app is open or closed, and whether you are using the device at that moment. The message pops up on your screen, usually with a sound or vibration, to grab your attention right away.
The word "push" describes the direction the message travels. The app or service sends (pushes) the notification to you, rather than you having to open the app and pull the information out yourself. This is why notifications feel sudden — you are not checking for them. They are checking for you.
Push notifications are different from email or text messages because they come from apps you have installed, not from your email provider or phone carrier. A weather app pushes a rain alert. A social media app pushes a notification that someone liked your post. A news app pushes a breaking news headline. Each one arrives on its own schedule, set by the app's developers.
Key Takeaways
- Push notifications are messages sent by apps and websites that appear on your device without you opening the app first.
- Each notification is controlled by the app that sends it, and the app decides when and how often to send them unless you change your settings.
- Notifications arrive with a sound, vibration, or visual alert designed to interrupt what you are doing and draw your attention.
- You can turn off push notifications for individual apps or change how they appear, but the steps differ slightly between iPhone, Android, and computers.
How push notifications reach your device
When you install an app, it asks permission to send you notifications. If you tap "Allow," the app registers with a notification service run by your phone's operating system — Apple's push notification service on iPhone, Google's Firebase Cloud Messaging on Android. The app then sends messages to that service, which forwards them to your device.
This system works even when the app is closed because the notification service runs in the background on your phone. The app does not need to be open. It does not even need to be running. The service holds the connection and delivers the message the moment it arrives from the app's servers.
The app developer decides what triggers a notification. Some apps send them on a schedule — a fitness app might send a reminder every morning at 7 a.m. Others send them based on events — a messaging app sends one when someone writes to you. Some apps send them based on your location — a store app might notify you when you are near one of its locations. The app controls the frequency, timing, and content.
Why apps send push notifications
Apps send notifications to bring you back into the app. A social media company wants you to check likes and comments. A shopping app wants you to see a sale. A news outlet wants you to read a story. A game wants you to play another round. The notification is designed to interrupt whatever you are doing and pull your attention toward the app.
Some notifications are genuinely useful — a banking app alerting you to unusual activity, a calendar app reminding you of an appointment, a weather app warning of severe storms. Others are designed purely to keep you engaged with the app, even if the message is not urgent or important to you.
Apps also use notifications to collect data about you. When you tap a notification, the app records that you responded. It learns what types of messages make you engage. Over time, apps refine their notifications to send you messages they know will make you tap them, which keeps you in the app longer.
The difference between notification types
Not all notifications look or behave the same way. A banner appears at the top of your screen for a few seconds and then disappears. A badge is a small red circle with a number on an app icon, showing how many unread items you have. An alert is a box that pops up in the middle of your screen and stays there until you dismiss it. A lock screen notification appears on your phone's lock screen without unlocking the device.
Some notifications make a sound. Some vibrate. Some do both. Some are silent. The app chooses which type to send, though you can change how each app's notifications appear in your device settings.
Web notifications are slightly different. When you visit a website, it may ask permission to send you notifications. If you allow it, that website can send you messages even after you close the browser tab — similar to how app notifications work. You control these separately from app notifications in your browser settings.
Where push notifications come from
Any app you have installed can send push notifications if you gave it permission when you first opened it. This includes social media apps, messaging apps, news apps, shopping apps, fitness apps, banking apps, games, and weather apps. Websites can also send notifications if you allowed them in your browser.
You may not remember giving permission because the permission request often appears the first time you open an app, when you are focused on exploring it rather than reading carefully. Some apps ask for notification permission before you have even used them. Others ask after you have been using them for a while, hoping you will be more likely to say yes.
Some notifications come from the app itself. Others come from services the app uses. For example, a messaging app might send notifications about new messages, but also notifications about app updates, promotions, or events the app is promoting. All of these come through the same notification system.
How notifications interrupt your focus
Push notifications are designed to interrupt. The sound, vibration, and visual alert all trigger your attention automatically — you do not have to choose to notice them. This is why they feel intrusive even when you are not looking at your device. Your phone vibrates in your pocket, and your brain registers that something needs your attention.
Research on interruptions shows that once your attention is pulled away from a task, it takes time to refocus. A notification that takes five seconds to read can disrupt your focus for much longer. If you are working on something that requires concentration, notifications can fragment your attention throughout the day.
The apps sending notifications are counting on this. They want you to notice. They want you to tap. They want you to spend time in the app. The notification is a tool designed to make that happen, whether or not the message is important to you.
Frequently Asked Questions
Can an app send notifications if I did not give it permission?
No. Apps must ask for notification permission before they can send them. However, some apps ask for permission in ways that are straightforward to miss or approve without thinking. If you see notifications from an app you do not remember allowing, you can revoke permission in your device settings.
What happens if I turn off notifications for an app?
The app will no longer send you notifications, but it will continue to work normally. You will not receive alerts, sounds, or badges from that app. You can still open the app and use it — you just will not be interrupted by messages from it.
Do push notifications use my data or battery?
Push notifications use very little data — usually just a few kilobytes per message. They use minimal battery because the notification service handles the connection, not the app itself. Turning off notifications will not noticeably extend your battery life, but it will reduce interruptions.
Can I get notifications from a website without installing an app?
Yes. Websites can ask your browser for permission to send notifications. If you allow it, that website can send you messages even when you are not visiting it. You control these in your browser settings, separate from app notifications.
Why do some apps send so many notifications?
Apps send frequent notifications because they are designed to keep you engaged. The more often you see a notification and tap it, the more time you spend in the app. Developers test different notification frequencies to find the level that keeps users engaged without making them uninstall the app.