I have a Sprint Note 5 and I'm suing the Google Messenger app as my default texting app. Ever since I got the message that enhanced messaging was turned on I have seen random text messages either delayed or I never receive them. Other times they come through normal and on time. This goes for regular SMS from iPhones, Android devices from other carriers, MMS (Group Messages) and even RCS messages have gone missing.
I will say it happens most often on MMS Group Messages and they come in like 24hrs late.
Anybody else have similar issues?