I have an iphone and my husband has an android. Neither of us have actually received or sent anything to/from the unknown number in the text log. I was looking for a phone number that I had deleted out of my phone but I knew I had sent a text to the number so I logged into my verizon account and checked the text log. I saw a phone number I didnt recognize and it was saying that I sent and received picture/video messages to/from that number but I never had any communication with that phone number. Then I checked my husbands and noticed the same thing was on his text log but a different number.