Nexus 5 only emergency calls call are allowed by device owner I am new to Android and I am not the owner of the current device (LG Nexus 5) I use. I come across this problem: I am not the owner of the device. Instead, I am the second user. When I want to call someone, it prompts an alert box saying that 


  only emergency calls are allowed by the owner. 


Similarly, when I open the Messenger app, another alert box prompted:


  this app isn't allowed by the device owner


so I set Hangouts as the default SMS app, but SMS is disabled and not be able to enable. 

Other features work fine. The reception is full. Cellular data works. I can even accept calls, just not be able to calling out or sending SMS. Do I have to contact the owner, for them to unlock the calling and texting features?
when your phone is under guest it wont allow you to have access to everything. switch to original owner and your phone will work again!