The past few days I have noticed that I have been receiving MMS messages very inconsistently with 3rd party SMS/MMS apps - sometimes I will receive them right away, sometimes hours later, sometimes I just get a timeout error and cannot download the message. I have confirmed the issue by attempting to send a photo to myself. Tech support from my 3rd party app confirmed multiple Verizon users have the same issue. MMS is working with Android Messages, but I would like to not have to use this app.

I am running Android 7.1.2 on a Google Pixel. I have attempted to solve the problem by restarting the phone, restoring default APN settings, and uninstalling and reinstalling the SMS/MMS software.