My phone is not receiving any texts or calls. I can make calls and send texts on my end, but can't get any back. The only time I get texts is after I make a call out and after I hang up, all texts will come in at once. This solution will only work for a short period of time, and then I have to do this all over again. I have rebooted the phone many times, and even factory reset it, but nothing lets me receive messages all the time. Please help!!