Hi mjskph45,
We appreciate you reaching out to us.
We’d like to gather additional details that may help us be in a better position to assist you.
Is the issue isolated to when you send SMS/ Text message?
If yes, check if you have to install a new carrier update.
- "Make sure that your device is connected to Wi-Fi or a cellular network.
- Tap Settings > General > About.
- Follow the onscreen instructions to install your carrier update."
You can use the article below as a reference.
Manually update your carrier settings on your iPhone or iPad - Apple Support
Also, check if you have Screen Time enabled.
If you need further assistance after trying these steps, please reach out to your carrier.
SMS or text message is a carrier-provided service.
The message is likely referring to your phone plan funds.
Take care!