okay, i have a verizon cellphone. i just got it about 3 weeks ago. as you may or may not know, if a verizon user sends a text message to another verizon user, when you check your sent messages, if the message is delivered it will make a check mark showing that is was recieved. i noticed about a week and a half ago, that it has stopped making check marks. i have sent hundreds of texts to all different verizon users, and they all get my message and text me back, but it still says that the message has been sent and the check marks havent showed up. i have cleared out my inbox numerous times and shut off the phone, etc, but still nothing. anyone know why this is happening? its very frustrating >.<