Hmm, looking online it seems to be the USB charging port and looks fairly common. Replacement fixes it.
I had an issue with my old S3 where the headphone jack would break after about 6 months. Easy enough to swap out the module but shame it had to be done about 4 times over the 2 or 3 years of owning the phone.
Ordered a replacement board and a set of wanglers to get at the original. Wanglers came first so I thought I'd practice the removal. Removed the board, gave the usb port a scrub and reassembled. Bloody thing works now...
Hmm, looking online it seems to be the USB charging port and looks fairly common. Replacement fixes it.
I had an issue with my old S3 where the headphone jack would break after about 6 months. Easy enough to swap out the module but shame it had to be done about 4 times over the 2 or 3 years of owning the phone.