Facebook dispatches an application which is called Facebook courier. It is essentially used to visit with companions. Indeed, you can utilize it with your versatile number. There is dim mode accessible which is reasonable to use in the night. It is fundamentally evolved to improve the vision. For Facebook application, there isn't any full dim mode, yet you can initiate it from your telephone's settings. For additional, contact Facebook Customer Service. https://www.customercare-email.com/facebook-customer-service.html