Hi ​@Milo0804.

Thanks for your post. I am sorry you’re having issues receiving texts since switching networks. Let’s get this sorted for you.

Please try the following steps on your iPhone:

Go to Settings
Tap Phone
Tap My Number
Delete the old number and re-enter your correct mobile number
Tap Save

Then refresh your messaging settings:

Go to Settings
Tap Messages
Turn OFF iMessage
Go to Settings > General > Transfer or Reset iPhone > Reset
Tap Reset Network Settings
Once the phone restarts, go back to Settings > Messages
Turn ON iMessage again and allow it to activate

This will help your device re-register your SIM on the network and should resolve any messaging issues.

If you’re still having trouble after this, let us know and we’ll be happy to help further.

~Marquerita