Unable to send text messages

[nicolaturner]

I changed my SIM card last night from Optus to TPG and my phone has joined TPG now however there is only one, sometimes two bars of service and I am not able to send text messages.
Why is there not 4 bars of service and why can’t I send text messages?
I need to have this fixed.
And yes I have turned my phone off and on several times in the hopes this would fix the problem.

[BasilDV]

Hi @nicolaturner 

We've created an article on how to troubleshoot it:

• Troubleshooting Mobile Voice for Cannot send or receive SMS or MMS
   

Let us know how it goes.