Normally Zing alert notifications do arrive quite quickly, most of the time in less than 2 seconds. The most common reason for notifications being delayed is the phone or device had no internet connection or a poor connection and the notification did not arrive until the connection was made.

However, there are some other cases where we've seen them get delayed:

Delays for notifications on Android Devices:

Delays for notifications on iOS devices:

  • As with Android, some wifi routers will cause iOS notification delivery delays.
  • Notifications may be delayed if "Restrict background data" is checked for the app, if Wifi-Optimization is turned on in the advanced settings, or if priority mode is enabled.
  • "Low Power Mode" is enabled. If in your Settings > Battery > Low Power Mode is enabled, this will reduce the rate at which notifications can be received or turn them off completely.

WhatsApp has a good list of instructions on troubleshooting delayed Android and iOS notification at the bottom of their FAQ page here: