so ive been trying to get access to special symbols such as " ^><[ ]{ } " and everyone seems to be able to get a pop up screen with those symbols on it when they hit "FN + sym" but when I press those buttons, the screen that is supposed to pop up does not happen. Please help..... is there anything i can do to get it working? also, how do I turn on the secondary camera lens so i can take pictures facing myself?

THANK YOU!!