Hi, I have an iPhone 4 on the sprint network. I was having a problem about a month or so ago with a phone number that was repeatedly calling me even though I didn't know them, so I called sprint and had it blocked. Recently, every time I reply to a text on my phone through Bite SMS (from the pop ups) the message will send, but then a new message box pops up with the exact message in just sent and says "message failed" and in the to: field is the phone number I had blocked???? And I am positive it is the blocked number because I sent a message just to see what happens and I get a message back saying this number is on my block list... I have this number saved absolutely no where on my phone and it's not copied to my clipboard... Where is it coming from???