Clix Blog

Why Aren’t My Push Notifications Working? Troubleshooting Guide for App Developers

troubleshooting

Why Aren’t My Push Notifications Working? Troubleshooting Guide for App Developers

Push notifications often fail silently, leaving developers guessing. This guide explains the full flow and covers common issues like expired tokens, misconfigured keys, permissions, and payload errors, with best practices to ensure reliable delivery.

Handling Background and Foreground States for Reliable Notifications

push notification

Handling Background and Foreground States for Reliable Notifications

Push notifications don’t always behave the same. Delivery depends on app state, device settings, and power rules. This post explains FCM and APNs differences, how foreground and background states work, and what to watch for to keep messages reliable.

How Push Notification Delivery Works Internally: APNs and FCM Deep Dive

How Push Notification Delivery Works Internally: APNs and FCM Deep Dive

We share an in-depth look at how Apple Push Notification service (APNs) and Firebase Cloud Messaging (FCM) handle push notifications.