Hard to peel stickers off lense cover tempered glass (so tiny)

Bought pack to try the camera lense protectors.. broke both of them attempting to peel bought sides of sticker or coating off. The tiny glass itself was not even adhesive on one side. My hand cramped from hold it for so long struggling to unpackage, never made it on to phone. The tempered glass for phone screen are okay quality. Just wish I could get a protector on my camera lense..

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