Repetitive "No Caller ID" calls
I am getting one or two calls a day which show up as missed calls. The phone does not ring. But when I check the calls, there is a "No Caller ID" call that I have purportedly missed. Usually, I get one each morning between 10 and 11, and one in the late afternoon or evening. Has anyone else seen this? I have talked to my carrier (Verizon) and they have no clue. Is it possible that this is malware, or perhaps related to one of the maps I have on the phone. I had an iPhone 5 on which this was happening, but In traded it in for a 6 and am getting them there as well.