I ordered a Samsung S21+ screen replacement (with fingerprint sensor) on Amazon. After paying for professional installation, I found the screen had a black line, a black dot, the fingerprint scanner didn't work, and the volume up button was broken.I contacted Amazon with full proof (photos, video, chat transcripts), but they denied my A-to-Z claim just because the item shipped to a freight forwarder — even though the package was untouched.The seller ignored me. Amazon support said they “caught a snag” and wouldn’t help. I now have a damaged phone and wasted money. I expected better buyer protection from Amazon.