I have spent a ton of money on various screen protectors for s21 ultra since it has the infamous ultrasonic fingerprint scanner which renders all tempered glass protectors from other brands useless. I have also tried various plastic screen protectors from brands such as spigen, esr and their quality of plastic ruins the beautiful display of s21 ultra.
But this is it guys! If you have spent 80,000+ INR on a phone, you should definitely get screen protectors from rhinoshield. At the moment, they did not have tempered glass for s21 ultra so i settled for impact flex protector which is plastic, but doesn't feel like it. The touch is as if I'm directly touching the glass. If you have searched for the perfect protectors for s21, look no further than this.
Recommendation: Use the phone without case for at least 2 days after applying the screen guard so that the protector bonds with the screen properly and doesn't come off when you use a case.