If you receive an error trying to send or receive SMS or MMS, try the below:

1. Restart your phone: Turn your phone off and on again to refresh your network connection.
2. Check coverage: Make sure you’re in a coverage area by checking the maps for C Red plans or C Blue plans.
3. Try making a voice call to confirm whether it’s an issue with your whole service or just messaging.
4. Free up space: If your inbox and sent messages folders are full, you may be unable to send messages. Delete old messages to free some space.

Message Centre Number
If your phone allows you to make changes to your message centre number, make sure that it’s set to the correct number.
For C Red plans use ‘+61415011501’
For C Blue plans use ‘+61418706275’

On most phones, you can go to settings and find the option for ‘Message Centre Number’.

If you have an iPhone, you can check it by dialing *#5005*7672#.
If you then need to correct it, you can dial:
**5005*7672*+61415011501# for C Red plans, or
**5005*7672*+61418706275# for C Blue plans

iMessage on iPhones
If you’re using an iPhone, check if the message you’re trying to send is enclosed in a blue bubble.
If so, this indicates that it’s trying to send the message over the internet rather than as an SMS, so you will require working mobile data or access to a Wi-Fi network.
To turn off iMessage entirely, simply go to Settings > Messages, and turn ‘iMessage’ off.

Posted in: Connecting to CMOBILE