Visit service center if phone is in warranty, otherwise they will charge you. You can also visit some local repair shop who provide software related service for low cost. You can also do your self you have knowledge regarding this or you can watch few YouTube videos for this.
As per your query, we want to inform you that the smartview feature is not available on your tab, that's why you are unable to use the option on your device, however, we are taking your valuable feedback, We are continuously working to make our products better and more efficient.
Tab's screen to Laptop? Or Laptop's screen to Tab ? . If it's the first, the it should be straight forward ig... You can get plenty of tutorials online.
