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crwdns2934241:0crwdne2934241:0 Tom Chai

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The first picture with a cable you are holding is for NFC.

Weak signal is probably due to torn upper/lower antenna flex cables, or in your case, a bad rear case.

The case should NOT have any color paint over screw posts, conductive adhesive attachment pads and metal contact finger landing pads. Cheap cases often make this mistake which blocks RF singnal conductivity.

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