Right - I've seen a few threads around here about difficulty deleting large sms threads. There have been the option of apps which delete them all. Thing is - I don't quite want that. I've got a 800+ long thread, and want to keep some - but going through and locking the ones I want to keep one by one is taking ages (especially as it scrolls down to bottom after each one). Is there a way to mark several at once - so I can mark the ones I want to lock in one go? Or mark the ones I want to delete in one go?