Issues deleting text messages.

[Kickboxingpredat]

Whenever I try and delete message threads. They're big convos 500+ messages some over 1000, However last night I selected like 30 convos and pressed delete and left it overnight woke up and IT WAS STILL DELETING. I ended up cancelling it and the app crashed.
I am using the generic texting program

 

[El Presidente]

Was it all message threads, or are there specific convos you want to keep?

As a shortcut, you could head to settings -> apps -> all -> messages -> clear cache/data. That would wipe all messages (but it would take the messaging app settings with it too).

Alternatively, try deleting them one by one.

 

[dsho]

Hijack the thread:

I tried to send a MMS but failed due to some carrier settings.

I have deleted the offending MMS but the red icon indicating failed sms still appears daily.

Now, I have a constant red icon. How do I get rid of this without deleting all messages via the clear cache method?

thanks in advance!