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deleting an sms without opening it

All you have to do is longpress (hold) on the conversation you would like to delete. It will bring up a menu, and delete should be somewhere, click it then, confirm it. Also, there is an app that lets you block calls and texts from any number, that's if you keep receiving these premium messages. You can get this app from the store, it is something along the name of SMSBlocker or something.
 
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