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[HOW-TO][TRICK]USB OTG ON S3Mini

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g3rrydanc3

Senior Member
Jan 9, 2012
55
29
Surabaya
USB OTG S3 Mini
DOESN'T REQUIRE ROOT
Preparation:
  • USB OTG
  • Cable usb male to male
  • Flashdisk/mouse/anything for test
  • For flashdisk/external hdd use nexus media importer or other application
http://imageshack.us/a/img705/391/20130311215342.jpg (charger for tablet china with 2 male usb)
How to:
  1. Plug USB OTG to S3mini http://imageshack.us/a/img600/4273/img2013031100704.jpg
  2. Plug usb male to usb otg http://imageshack.us/a/img12/2060/img2013031100705.jpg
  3. Plug another usb male to power source(leptop/powerbank/etc)http://imageshack.us/a/img442/6097/img2013031100715.jpg
  4. Plug out all male usb, baterry will be shown charging indicator(but actually not charging)
  5. Plug a flashdisk http://imageshack.us/a/img825/5094/img2013031100711.jpg
Minus:
  • Cannot be charge
  • Baterry drain
To make it normal again do restart
 

somin.n

Senior Member
Feb 3, 2013
475
463
Google Pixel 2
Google Pixel 4a 5G
Great, I will test it at home ;)

edit:
so, I tested it, but i didn't success :/ I made 1,2,3 point, now phone looks that it is charging, so i re-plug flash disk into phone, but nothing happen...
I tried it with this app https://play.google.com/store/apps/details?id=com.homeysoft.nexususb.viewer, with in buil file manger, with ES file manager.
I am on stock, only rooted, rom...
What I am doing wrong? Or it isn't just working? :/
 
Last edited:

g3rrydanc3

Senior Member
Jan 9, 2012
55
29
Surabaya
Great, I will test it at home ;)

edit:
so, I tested it, but i didn't success :/ I made 1,2,3 point, now phone looks that it is charging, so i re-plug flash disk into phone, but nothing happen...
I tried it with this app https://play.google.com/store/apps/details?id=com.homeysoft.nexususb.viewer, with in buil file manger, with ES file manager.
I am on stock, only rooted, rom...
What I am doing wrong? Or it isn't just working? :/

Try plug mouse
I use that application and it's working
wonderful and finally an easy way (it's the first one also) ...but I didn't understand why we have to plug it to power first (steps 2,3)?

sent from the super siii mini GT-I8190 using xda premium app.
I don't know
I found it accidentally


Sent from my GT-I8190 using xda premium
 

adamess

Member
Jun 25, 2012
15
1
Eger
Hey!
Great news, thank you for sharing. I've been wanting this for a while.
Could you please make a logcat dump of the phone while doing the process?
We might find something of interest.
Greetings
 

somin.n

Senior Member
Feb 3, 2013
475
463
Google Pixel 2
Google Pixel 4a 5G
Ok, i tried almost every USB device that I have, but without success :/... But if I look in your attached txt file, I see there this: "build.display: DMod based on BenzROM v4", I really don't understand what about the file is, but I thing, that this mean that you are using some moded ROM, not stock rom, right? So I thing that there should be some mod/tweaks in this moded ROM which enables for you OTG ;)
 

g3rrydanc3

Senior Member
Jan 9, 2012
55
29
Surabaya
Ok, i tried almost every USB device that I have, but without success :/... But if I look in your attached txt file, I see there this: "build.display: DMod based on BenzROM v4", I really don't understand what about the file is, but I thing, that this mean that you are using some moded ROM, not stock rom, right? So I thing that there should be some mod/tweaks in this moded ROM which enables for you OTG ;)

Thats weird
Yesterday i do otg but not working
and then i restart and do it again and working

Dmod have tweak to enable otg?
And dmod have bln kernel

Sent from my GT-I8190 using xda premium
 
Last edited:

dolar4ik

Senior Member
Nov 16, 2012
306
386
Very interesting information.
Looks like the phone does not provide any power when OTG cable connected.
Theoretically, it is possible to create small app that will give power to USB (phone will work as charger)
 

g3rrydanc3

Senior Member
Jan 9, 2012
55
29
Surabaya
Very interesting information.
Looks like the phone does not provide any power when OTG cable connected.
Theoretically, it is possible to create small app that will give power to USB (phone will work as charger)
not connect
862273_10200215406120458_2112514066_n.jpg

connect
862902_10200215406240461_1269599741_n.jpg
 
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QuanticZero97

Senior Member
Nov 29, 2012
150
13
Im on Dmod v2N and when i connect the device and usb stick this is what i get. (Although i didnt try connecting it to a source of power with a male to male cable) if i understood it correctly, it says here that os doesnt support otg.

Sent from my GT-I8190N using xda premium
 

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adamess

Member
Jun 25, 2012
15
1
Eger
I ran through the logcat dump and it seems like the usb host manager is what we should check. As I can see, it's disabled by default, and only activated when the device is connected to a power source.
When disconnected, that small gap, when the phone still thinks it's charging let's the host manager do its job. At least that's what I think is happening.

Unfortunately, I don't know this much about android. My best bet would be to somehow start the manager when needed, but again, don't know if it's that simple or even possible.
 

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