Question

Galaxy A3 doesn't work USB OTG

Sep 7, 2017 8:42AM PDT

My Galaxy A3 2017 passes its OTG check confirming it's USB OTG enabled but when I connect a brand new OTG cable and FAT32 usb memory stick it doesn't detect it. I've tried downloading, installing and running every otg troubleshooting app. None of them detect it and none of them tell me how to fix the problem. Only possible answers seem to me to be that either the OTG cable is faulty or there is some tweaking I need to do with the phone's usb driver - although it surely wouldn't be passing the OTG check if that were the case?. Any suggestions as to how I can test the former or pursue the latter (Since both are brand new it cheeses me off no end that they are not doing what they are supposed to do).

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Answer
Clearly a warranty issue.
Sep 7, 2017 8:51AM PDT

Keep it simple. Talk to Samsung or carrier and be clear you want a fix or refund so you can try again.

Also, post in the XDA Forums where many deep dive into these issues. Be aware they may fix it by installing a new ROM.

Post was last edited on September 7, 2017 8:51 AM PDT

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Thank you.
Sep 7, 2017 10:27AM PDT

Many thanks for the advice. Much appreciated. Trouble is I need to know whether the problem is with the phone or the OTG cable to decide which supplier to tackle. I just found a YouTube demo of how to check the OTG cable with a mouse, so I'll give that a go when I get home - out and about at the minute.

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Looks like it's the cable
Sep 7, 2017 1:35PM PDT

I took the usb wireless mouse button from my laptop (on which it works fine), plugged it into the OTG cable and connected it to the phone. Moved the mouse around and twiddled its scroll knob. No sign of the cursor on the phone screen and no sign of the mouse having any effect on it. Mouse dead. Ran the USB OTB Check app again on the phone and it still gives me a big green tick saying "USB OTG Compatible". So it looks as though the problem is with the cable. Message sent to the supplier.

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Such are usually tested on another known good phone.
Sep 7, 2017 3:09PM PDT

At least that's how I do this.

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