Similarly, how can I see hidden last seen on Truecaller?
A green dot indicates that the person is free to talk. You can also see the last time a user was active in the app through the 'Last Seen' status. You can always turn the feature off or on in the settings section in Truecaller. To disable or enable this feature bring up the menu -> settings -> general.
Subsequently, question is, how is true caller last seen updated? It could be when the user last picked up any incoming call or made a call. Of course it is to say that Truecaller can be activated only when the users have an internet connection. So whenever there is an incoming call and internet is on, the app gets activated and thus last seen gets updated.
Additionally, can Truecaller show wrong last seen?
So Truecaller pings them so that they can derive their status of being 'online' or 'offline'. Truecaller also checks it's database for the number, so that it can check wether he/she is on a call. The Truecaller app is not working properly. It's not showing the last seen statuses.
Why does Truecaller not update last seen?
If a user installs the app and allows it to sync their contacts, their "Last Seen" time is visible in the application. But it's not the last time you used the app itself like WhatsApp, but rather your actual device. For iPhone, go to Settings and then General, select "Background App Refresh" and look for TrueCaller.
