Playing COD Mobile. I have a Samsung Galaxy S21 Ultra. fantastic phone EXCEPT for the thick rear camera component which is now a problem. This renders my new S21 Ultra unusable with this game controller creating a seesaw effect and the thick end trigger/button is too close to the phone's face when in the passive/rest position. So I have to use my old but reliable Samsung. Galaxy Note8 with this controller due to the flat back camera design. Excellent. Problem solved But! Due to the accordion design, the elastic band, which provides very good compression to keep the phone in a fixed position, indirectly creates a bulge (or bend) in the middle so the buttons don't hit the face directly on the phone. This leads to delays and sporadic response results. Also, the self-adhesive rubberized semi-circles used to hold the phone in place now slide down during gameplay causing the phone to slip off unexpectedly, and the triggers no longer click at preset locations on my phone. For example. , I place my ADS (aiming down) and fire/action buttons on top of the phone to line up with the two controller triggers/buttons. I also have reload and location buttons on the other two triggers. As a general rule, triggers have a 70-80% chance of doing what I want. Very frustrating. Most of the time I get in and out of the ADS by pulling and holding the trigger to make the ADS create a visual whip. this creates a significant response lag due to the animation required to enter and exit the ADS. This means that I have at least a 20-30% chance that my character will die before the firefight or melee begins - regardless of the other player's skill level. Not good. I almost died from bots in battle royale because of this stupid crap. Extremely dissatisfied.