No status shown below display name When I look at the list of my Viber contacts, I see three different statuses which are online, offline and last seen at. However, there's one particular contact which doesn't have any of it, I mean nothing is written under the name on his contact profile on my phone. What does it mean?

He can't have uninstalled Viber cause his account looks recently refreshed. He has updated his photo along with his Line App. So what does this really mean?
Viber has a privacy settings where you can hide that status

you can find that by clicking the "more" button... that is the three stacked horizontal lines, then choose settings then privacy. you get something called "Share 'Online' Status" you can untick that if you want to hide it. Note that you can change it once every 24 hours