I was a skeptic like the rest... and at first I thought this case was a complete scam! It would stick only briefly on smoothest surfaces if it was super clean and I pressed my phone hard against the surface to “seal” it. THEN! I realized there is a very sneaky plastic seal that the case came originally wrapped in that needed to be removed before use 🙄😆 Now, it works like a gem and whenever it isnt sticking well I just wipe clean with a clean, damp cloth and dry with a lint-free material and it’s THE BEST CASE EVER! I go around bragging about it to everyone!