Network Checker

• For Prepaid users, ensure you have sufficient balance in your account.
• For Postpaid users, ensure you have no outstanding amount.

• Use your default messaging app/function.
• Free up space in your device’s messaging Inbox/Outbox.
• Verify if message is unable to send to all numbers or specific numbers / send message to your own number.
• If you recently changed from an Apple device to a different model, ensure you have de-registered from iMessage. Insert your SIM card into your Apple device and connect to the mobile network. Tap Settings > Messages and turn off iMessage and restart your device.

• For Android devices, go to Settings > Message Settings > Check SMS centre number, +60162999902.
• For Apple devices, the SMS centre number is automatically set.

• Turn off Bluetooth/WiFi and connect to your mobile network.
• Switch flight mode on and off.
• Update your device's operating system to the latest version.

Ensure there are no service disruptions in your area. If there is a network outage, you can skip the subsequent steps.

• For Prepaid users, ensure you have sufficient balance in your account.
• For Postpaid users, ensure you have no outstanding amount.

• Check if you have any remaining Internet quota balance via MyDigi / Celcom Life app.

• Turn off Bluetooth/WiFi and connect to your mobile network.
• For 4G devices, ensure 4G is switched on.
• Switch flight mode on and off.
• Update your device's operating system to the latest version.

• Check for possible impact of environmental factors.
• Check if there is high volume traffic to a particular app or site.
• Check if your 4G/5G device has moved into 2G coverage area.
• Check if there is high volume of Internet usage in the vicinity.