18

When connecting two Android phones via a cable, how can I choose which phone is charging which phone? E.g. when I connected a Samsung Galaxy S9 (Android 10) with a Google Pixel 6 (Android 12) via a male-to-male USB-C cable, the Google Pixel 6 got charged.

0
16

Under USB preferences, whichever device has Charge connected device as enabled is charging the other device.

Snapshot from Pixel 4a (Android 12) connected to and charging One Plus 7 (Android 10)

enter image description here

And the reverse (One Plus charging Pixel)

enter image description here

If you want to switch charging when connected, toggle the switch on any device and the selection on the other device gets reversed.

Edit: To address the comments, charging cannot be switched off on both devices. I couldn't find any documentation around this.

5
  • 5
    Looks like this feature was added since Android 9 Pie.
    – Andrew T.
    Dec 3 '21 at 9:54
  • If you want to switch charging when connected, toggle the switch on any device and the selection on the other device gets reversed seems less than ideal - what if you want no charging to take place at all?
    – Chris H
    Dec 3 '21 at 16:30
  • @ChrisH: Then presumably you'd set it to "off" on both phones, instead of "on" on one or the other. Dec 4 '21 at 2:21
  • @PeterCordes that's what I'd hope to happen, but "toggling one reverses the other" means that when you turn one off the other turns on
    – Chris H
    Dec 4 '21 at 11:38
  • Regarding charging not being able to be switched off completely on both, I bet this has something to do with USB certification. There are all kinds of seemingly odd edge cases involved there, and it would not surprise me if one o them is ‘no data transfer without power transfer’. Dec 5 '21 at 13:22

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.