I'm posting this for my mom who seems to be having this issue and I cannot figure it out she's had three different phones in the past year so now I'm beginning to think it's the network anyways when people call her it goes straight to voicemail then she will restart her phone and everything will be okay I had to remove Facebook and messenger from her phone it seem to be okay for a couple of days and now it's doing it again has anyone had this issue or have any ideas as to what else I can try? Verizon does not seem to know how to fix the problem