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Device guides for

LG G4

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List of display iconsTurning flight mode on my mobile phone on or offSetting up my mobile phone for internetChecking SIM lock status for my mobile phone

I can't make voice calls

If you can't make voice calls, follow these instructions to solve the problem.

Solution: Try again later when you're in an area with better network coverage.

View our network coverage map.

If you have broadband at home and can’t access your network try using WiFi Talk, which lets you make and receive calls and SMS using your Optus mobile number over a Wi-Fi connection.

Solution: Try making a call to another number. If you can make a call to another number, the error is most likely at the receiving end.

Solution: Try again later or when you're in another area.

Solution: Choosing a network for my mobile phone

Solution: Turning flight mode on my mobile phone on or off

Solution: See how to top up your prepaid phone card.

Solution: Call 1509 from Australia or +61 2 8082 5678 when abroad. If you're already abroad, you need to use another phone.