Deleting texts - is there another way?

[omidb1]

My inbox has so many texts that it's slowing the whole text message system down on my phone and making it very annoying to text with. Some threads are so big that it doesn't delete them it just crashes the messages app.

Is there another way to delete messages? Maybe if I connect it via USB?

 

[Mat-Moo]

I use an app "Delete old messages" to delete them once they are 2-3 months old. Keeps it running better