Way to delete 3,000+ text messages quickly?

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http://androidforums.com – Hi, I have over 3,000 text messages on my phone, and I need a decently quickly way to delete them. I've seen a few other posts on here about this topic, but everything everyone has said isn't working for my phone. I've tried downloading the SMS Backup & Restore app; it was working fine while backing up my text messages, but now I'm trying to delete them all, and it is taking FOREVER. It's been deleting messages for over an hour now. And I'm not sure whether to stop it or not, because on other threads people have said that this app doesn't work, so I don't want to be wasting my time. I've (General)