Sequoia XPS 13 9360

CPU - i7-8550U GRAPHICS - UHD 620 WIFI - Intell AC-7265 RAM - LPDDR3 1867Mhz Storage - 256GB Toshiba

I switched to a intel card since I could t get Broadcom to work. Everything works well except for 3 things. When I turn down the brightness the screen flickers, Bluetooth doesn’t work at all, I can turn it on but it won’t detect any devices and I tried to connect through my phone but it didn’t work either, and unfortunately I can’t get phone mirror to work cause I am using heliport since it is kind of my only option, for now.