But contacts of some people were alerted while they were secretly viewing porn on their Z10 smartphone.
A user, named Sosof, posted a screenshot of his pal viewing an adult site, on the Crackberry web forum.
"Be very careful! LOL," he said with the picture.
Another user, Gbolhajo added that this had happened a lot of times to his contacts as well.
The mobile company said the feature, which will also run on the new Q10 phone out on Monday, must first be turned on.
However, some users have claimed that it was already activated and they had to turn it off themselves.