Please help. I purchased the Huawei Ascend II from Wal-Mart so I could use their Straight Talk. I am able to send text messages, but no one is able to reply or send a message to me. I have been on the phone for the last three days with Straight Talk for probably a total of 6 hours. Since, I am able to send a text to myself, they have come to the conclusion that the problem is with everybody else's phone, not mine. Any suggestions???