Yes thank you, hopefully, someone just forgot to plug it! 
and I did not plan on using the guarantee as it would take months since I ordered from an Asian company and I am living in Europe! 
Thx for your answers though I'll let you know of the results! 

thank you for your answer!
it's too much of a hassle though, I'll probably open it myself, any advice if I want to try to repair it manually?  

thank you for your answer @blackview_admin! I've just done a factory reset and I still have the same problem :/ 
what else could I do? 
Thank you in advance!

Hello,  After searching through this forum I did not find any solution or people having the same issue.  When I try to open my camera app and to connect to the front camera it just stops working, similarly, other apps freeze or close.  It does not seem to be due to several apps using it at the same ...