▲Fit for: Galaxy S20 Screen Protector 2+2 Pack ▲Why can't I use my fingerprint? Use an incorrect installation method and fail to follow our instructions or video prompts. ② When installing the protector, the fingerprint position is not tight. ③The mask was dusty after being removed, and it was not cleaned or installed in time. ▲Choose 2 places, the touch will be more sensitive step Ⅰ : SettingsAccessibilityInteraction and dexterityTouch and hold delay (open--0.5 seconds) Step Ⅱ: SettingsDisplayTouch Sensitivity (on) ▲* Note * Fast and easy installation - no bubbles. The product packaging has our professional installation video. ② Please watch the installation video before installation, because it requires some simple skills to install perfectly. ③ Please install the screen protector in a windless and dust-free environment. ④ Use the provided damp cloth and dry cloth to clean and dry the screen. ⑤ Tightly squeeze the edge of the film for about 30-40s to prevent the edge from lifting. (IMPORTANTLY) ⑥ After installation, please delete the original fingerprint of the phone and record the fingerprint again. ⑦ If you have any questions, please contact Micger after-sales service in time, and you will get a quick answer. ▲Package includes: Screen protector x2 Camera lens protective film x2 ❸Dry Wipe x2 Wet Wipe x2 ❺Dusf-absorber x2