i was hoping someone has found a solution to this issue. when i plug my phone into my mac at work, the computer doesn't recognize the phone and the phone doesn't recognize that it's been plugged into a computer. it starts charging but no alert about being plugged in by usb, and i can't gain access to options like choosing ptp or mtp. on the mac, android file transfer just says "no device found" as if nothing were plugged in. any advice would be greatly appreciated.
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