Help "Messaging is not your default"

[snidely]

The only way I can send a picture is using the default Messaging app. Any other gives me "Cannot compose message. Messaging is not your default message app."

I've been googling around for a long time and not found anything like this.

LG G4, Android 6.0

Any help would be most welcome.
Steve

 

[El Presidente]

What other messaging apps have you tried?

Textra sends MMS no problem for me.

 

[shadavis08]

You probably need to go in and erase defaults on another messaging app

 

[Clementine_3]

Also clear cache and force stop any you have installed and are not using. It's just confused

 

[snidely]

What other messaging apps have you tried?

Textra sends MMS no problem for me.

I've tried ChompSMS, Textra, and one other I don't remember. I'm on T-Mobile, if that matters.

I can send pictures using the built-in Messaging, but none of the others. I made each the default app when I tried it, and I don't understand "You probably need to go in and erase defaults on another messaging app"

 

[El Presidente]

Did you check the APN settings when using textra?

There's also a setting specifically for T-Mobile users. Try again, entering TMO APN Settings and using the wifi calling fix.

 

[snidely]

I've tried all suggestions, but no change. When I "Force Stop" Stock Messaging, it won't stay stopped. When I try to send a picture, it always opens the Stock, even though both it and Textra are stopped and Chomp is set as default.

 

[snidely]

Did you check the APN settings when using textra?

There's also a setting specifically for T-Mobile users. Try again, entering TMO APN Settings and using the wifi calling fix.

I checked those at the beginning of this little adventure. I'm beginning to think I'll just use the world's ugliest messaging app and just avert my eyes as much as possible.

 

[El Presidente]

Not sure what else to suggest then, sorry.

You are right, the stock messaging app is hideous..