I had purchased an S 20 Samsung in March 2020. Since a month, I am facing this issue that screen goes blank and starts flickering. After sometime it restores automatically. Also, the back panel is also coming out on its own...there is a small gap no...

My S20 back panel pops out on its own. It's 1.3 years old. What a cheap phone it is?? What can be done about it now?