Last time I tried using lense screen protectors for the cameras, it messed with the quality and focus of the camera but hopefully that problem is now fixed.
U SAID YOU HAVE BEEN A USING SPIGEN CASE SINCE IPHONE 6 AND STILL YOU DONT KNOW THAT TOUGH ARMOR DOSNT NEED TO BE SEPRATED INTO 2 PCS BEFORE INSTALLING . ITS A TWO PART CASE BUT YOU DONT NEED TO SEPARTE BOTH THA PARTS WHILE APPLYING JUST APPLY AS IT IS