Read Receipt not working on S21+

Hi aprilsteele, we understand the importance of being able to read receipts. Let's get this feature working properly for you.

Try clearing the cache and cookies on you device along with uninstalling and reinstalling the messaging application.

Reset the network settings to refresh your connection to the network. Settings icon > scroll to and select General management > select Reset > Reset network settings > Reset settings > select Reset to confirm.

If you continue to experience not being able to read receipts utilize our Mobile message troubleshooting tool to find and fix problems with your messages. 

Let us know if this helps, and thank you for contacting the AT&T Community Forums.

Jeff, AT&T Community Specialist

The app I use for text messages is the one that came already installed by the manufacturer.  It will not let me uninstall it.

Hello aprilsteele, thanks for the update on the app used for advanced messaging preinstalled on your device. You'd want to make sure that Advanced Messaging is enabled. 

Using Advanced Messaging:

Make sure you and the person you’re messaging are both in our domestic coverage area and have:

• An AT&T wireless account with HD Voice (not available for AT&T PREPAID).
• An Android smartphones that support Advanced Messaging1 from AT&T.
• Advanced Messaging turned on.
• A smartphone featuring the Messages by Google app with Enable chat features turned on and a Connected status.
• Up-to-date software installed on your smartphone.

Same issue

Hello @Lissy128, we're happy to help with troubleshooting steps to resolve your read receipt concerns. 

I've tried all of these and both phones on the account are att post paid with advanced messaging.   The only thing I was unable to find on my s21 was the enhanced lte you mentioned above.  This feature hasn't worked since the last update.

Thank you for the update @Lissy128.

It’s important to check the device model numbers to make sure it’s still supported since the 3G network shutdown. This includes iPads, tablets, and wearables. 

Talk and data services will only work for AT&T Wireless phones and devices that support at least 4G Enhanced LTE and HD Voice. If your device does not have the option for Enhanced LTE some features may not work properly. 

• Your phone will work if the HD Voice feature is turned on. If you can’t make or receive calls, or you’re having trouble accessing data and certain features, check the VoLTE or LTE status of your phone.
• Advanced Messaging requires an account and device that is set up for HD Voice.
• Have an unlocked device? Check out the service capabilities for Unlocked Devices ATT Network

To set up the AT&T HD Voice it requires a SIM card that is UICC-G or higher SIM card installed in your smartphone. Want to make sure to find out if your SIM card is HD Voice compatible? In the SIM card number, look for the digits 27 or higher in the 9th and 10th positions.

Don't have a compatible SIM card? Get one at an AT&T store.

The software update releases on our website are only available for AT&T branded devices. Keep in mind:

• The update may not work if you brought your own device to AT&T.
• You can check with the original carrier or manufacturer for software updates.

If you are still experiencing a disruption with connecting to certain features we recommend reaching out to the device manufacture for additional support with software update troubleshooting steps. Let us know if you have any questions. Thank you for reaching back out to the AT&T Community Forums. 

Alasani, AT&T Community Specialist