Hi Charaf,

Yes, to stream from your mobile screen you can use the screencast function. To record your mobile screen, you can also use the screencast function as a Video. I am attaching the links about screencast on Android / iOS below. Hope this is useful!

[Mobile Guide] v1.9.0 Update — iOS Screencast

https://medium.com/@prismliveofficial/prism-guide-13-screencast-on-androids-16528fcc9784