Hi, The logo / icon is a green head and the mask is grey. It is located on the line with information such as time, wifi strength, date, etc. It is in my 'chatroom' on my friend's phone, she sent me a screen shot of something and I noticed it. Does this mean a 3rd party app is being used to block me / freeze last seen? I have not asked her yet. There are times that her last seen is the same for hours even a day, though I know that she is very active on Whatsapp. I have a screen shot but don't know how to upload it here. Many thanks. First question!