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Hi,
I've been repairing an S4 recently, it was smashed and is now riddled with problems.
I've just bought a replacement sim card reader as the previous did not work.
the wifi/bluetooth do not work but I bought a replacement antenna, I am wondering if this is the cause?
also the external speaker does not work
does anybody know why the external speaker wouldn't work?
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To resolve the matter permanently you need to make microsoldering work:
How to repair WI-FI wireless connection in Samsung Galaxy S4
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Have you checked the spring contacts on the usb pcb that connect to the speaker, they may be squashed
Bruce Graham 의