Unable to receive messages from non-iPhone users on my iPhone 13

Welcome and thank you for reaching out. 🤗

First, try the following steps:

• Disable any VPN connections and restart your iPhone or tell Siri: "Restart".
• Learn how to update your iPhone to the latest version of iOS.
• Learn what to do if your iPhone won’t update.

Sign in issue:

Learn what to do → If you can’t turn on or sign in to iMessage.

Connection issue:

Learn what to do → If you can't send or receive messages.

Need more help?

• Contact Apple Support if you still can't send or receive iMessages
• Contact your carrier if you still can't send or receive SMS, MMS or RCS messages

Additional help:

• United States: 1-800-APLCARE.
• Contact Apple Support.
• Get Support.

Good Luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

Re: I have an iphone 13. Recently, I am not receiving any messages from callers who are not using an iphone. What can I do?

Seems cellular data may need to be turned on for text and SMS MMS messages to use the Messages app. (Provider charges may or may not apply, depending on provider and plan.).

View or change cellular data settings on iPhone - Apple Support

Eg: says:

View and manage cellular data usage

You can see how much data each app has used and you can turn off cellular data for individual apps.

1. Go to the Settings app on your iPhone.
2. Tap Cellular, then do any of the following.

• • Turn cellular data on or off for an app or service: Scroll down to the list of apps and services, then turn an app or service on or off. When cellular data is off for an app, iPhone uses only Wi-Fi for that service."

(More info. in the linked article if needed).