When receiving a text, I always receive an alert tone. However, I don't receive an alert tone from one particular iPhone user. This user does receive an alert tone when I send them a text. Is this a problem w/my phone or the user? Is there a fix?

Hi royster677,

Thanks for using the Apple Support Communities! I'm sorry to hear you are having these issues with your iPhone. If you are having issues with the text tone for a specific user, you may want to check that user's Contact settings (under the Edit button) as noted in the following User Guide page:

Contacts at a glance - iPhone

If everything appears correct and you are still having issues, you may also want to check your Blocked and Do Not Disturb settings:

Block calls and block or filter messages on your iPhone, iPad, or iPod touch - Apple Support

Use Do Not Disturb on your iPhone, iPad, or iPod touch - Apple Support

Regards

In the text conversation with that contact, tap Details in the upper right corner. Check to see if you have Do Not Disturb enabled for that person.

Glad it helped! It's an easy one to miss.