Recipients do not see Delivered and/or Read when they send me a text

Thanks for replying, LillyOh, and that additional info, it really helps! Even though your iOS software is up to date, if you haven't yet, it's a good idea since this is related to text message to check for carrier updates and install any that are available:

Manually update your carrier settings on your iPhone or iPad - Apple Support

Have a great day and thanks for using the Apple Support Communities!

Hello LillyOh,

We would like to see how we can help you with your Messages. What is the issue you are having with Messages Settings? If you are having issue sending or receiving Messages, follow the steps in this link: If you can't send or receive messages on your iPhone or iPad - Apple Support

"If you have issues with Messages after you set up a new device

If you experience issues like conversations in Messages showing up as separate threads or sent messages appearing as green message bubbles instead of blue message bubbles when you set up a new device, update your settings using the following steps:

1. Update your device to the latest version of iOS or iPadOS if needed.
2. In the Settings app, tap Cellular. Make sure that your phone line is turned on. If you use multiple SIMs, make sure that the phone number you want to use is selected and turned on.
3. In the Settings app, tap Messages. Turn iMessage off and then back on.
4. Tap Send & Receive.
5. Tap the phone number that you want to use with Messages."

Cheers!