Connecting 2v Diode to Micro USB Port on Samsung Galaxy S6 and Other Phones: Pin Configurations

Hello, I have a problem with the micro USB port, as a rule it should return electricity. The photo of the fan shows that such a thing is possible.

This is my question, how to connect the diode using the micro usb port on the phone so that it lights up, except that the diode has 2v and consumes a current of 20 mA + for this the appropriate resistor that I have already used.
I connected the diode to the first pin VCC + 5v VDC and the minus to pin 5 GND. I also tried to connect it the other way round, but with poor results.
Below, there is a table illustrating the microusb pins.


I hope I have described everything very well. I asked for help, I tested it on 2 phones, one Samsung galaxy s6 and my mother's other, I don't remember what she has.

Connect pin 4 with 5. If the device supports USB OTG, 5V will appear on pin 1.

So I wonder where this microUSB port is located. Are you going to connect this fan, LED diode or any other device to your phone or tablet and draw energy from it? Would you like your mobile device to be a source?

If so, the OTG cables can short-circuit the appropriate pins and the possibility of sucking mA from e.g. a telephone.

# 1 Edit

As a colleague recommended above. A simple 1: 1 cable connection will not do anything, because the phone should also receive information that something is connected and needs power. Shorting the pins sends this information.

I am sending you pictures, but my plug has only 4 pins, I should close 4 out of 5 (connect) so that the LED lights up.


Great respect for the people helping here. Thank you for your time.

The stairs begin at this point. How do you have a phone, look at the microUSB socket against the light, how many pins do you have in it? You should have 5 pieces. Standard.

Also check how many pins you have in your socket. See, because I met once or twice that these two pins were shorted directly in the microUSB socket itself.

I will ask a stupid question, are you sure what you put in is microUSB? Pictures are blurry for me, just asking.

This is how I looked at the first and second phones and they have 5 pins each on a micro usb socket.
Yes, the picture I posted shows the microusb.

And in your nest, which you showed in the photo? How many pins do you have? Not from the soldering side of the wires, but from the phone plug side.

So only 5.

The plug that you showed in the photos will not be suitable because it is only adapted to the data transmission configuration, where the device with the MicroUSB socket is a Slave, not an OTG.
You need a MicroUSB plug with all 5 pins available.

There is no need to feel sorry for this plug here. I can handle the connectors somehow.
Thanks for your help and best regards.