CB Activity : I display only my user's activity when using small screens

Is there any particular behavior with CB when using small screens such as smartphone or tablet ?

On my PC Windows , the main activity stream is reflecting the triggers of the plugin - That's normal
On smartphone and on tablet (Android) , I got only the activity "own", i mean the activities of the user which is connected - either as registered or superAdmin. 
(Same on my sandbox which is a fresh joomla+CB only on Cassiopea)

You mean the profile activity stream? That shows your activity and the activity of users you're connected to. When viewing another users profile you will see only their activity. The Recent Activity stream is used to show all activity you've access to. None of these are screen size based. To do that you'd probably need to have 2 menu items with 1 visible to desktop and 1 visible to mobile using CSS display rules so that you'd display 2 different streams dependent on what device is viewing it.

Oh yes, I mean the recent activity stream. I only have 1 menu link to this on my site and the template i use is a responsive one. I tried also with Cassiopea and i have the issue too. Something weird for me...

There's no code in place to do that. The activity will of course be a bit more compressed since it's a smaller screen, but that should be about it. Do you see this same issue on our demo site below?

demo.cbdemosites.com/

No problem with CB demosite, I connected as "user" the CB demosite recent activities informations displayed are same on big screen PC and small screen smartphone.

It seems it only occurs on my site (as well as sandbox), 
 

Um. I tried with other phone and it’s ok. I will continue to check on my side but it is not related to CB. Once i found i will close the topic