If you have ever opened an app's notification settings and seen a long list of categories — "General", "Promotions", "Mentions", "Silent" — those are notification channels. Introduced in Android 8 (Oreo), channels are the reason you can fine-tune alerts instead of muting an app entirely.
What a notification channel is
A channel is a categorized stream of notifications from a single app. Each channel has its own behavior: sound, vibration, importance, and whether it shows on the lock screen. When an app posts a notification, it must attach it to a channel. You, the user, control the channel — the app cannot override your choice.
Why one app has many channels
Well-built apps split their alerts so you stay in control. A banking app might use one channel for "Security alerts" (high importance, always audible) and another for "Product news" (silent). A chat app separates "Direct messages" from "Group mentions" and "Recommended communities". This design lets you keep critical alerts loud while sending marketing noise straight to a silent channel.
How to customize a channel
- Go to Settings → Notifications → App notifications and tap the app.
- You will see the list of channels. Tap one.
- Adjust Importance (from "Urgent" down to "Silent"), sound, vibration, and lock-screen visibility.
- Set a noisy channel to Silent to keep the content in your shade without any ping.
Tip: if you cannot find a channel, long-press any notification from that app, tap the gear icon, and you jump straight to the right channel.
Pinning beyond channels
Channels control how an alert behaves; they do not stop important notifications from scrolling away under a pile of new ones. For that, use Pinnit: pin a specific notification and it stays at the top regardless of channels, volume, or incoming volume. It is the perfect companion to a well-tuned channel setup.