[Q] USB OTG + Charging - General Questions and Answers

I have a USB OTG Y-Cable but I can't seem to get it to work the way I want. Any help would be greatly appreciated.
I want to connect my Android device to a HiFimeDIY DAC and simultaneously charge my phone (hopefully at a full 1.5A or greater)
I have tried my Galaxy S4 on the ktoonsez kernel. it powers and utilizes the DAC perfectly fine, but the phone doesn't charge. I have tried multiple AC adapters and multiple USB cables - both Samsung branded and otherwise. Do I need to try another kernel? Or another AC adapter or a specific cable? I see there is a patch to enable OTG + Charging on the Nexus 4, do I need to apply a similar patch to my phone?

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[Q] Wireless charging and otg at the same time question

Canyou charge the galaxy s3 wirelessly and use otg at the same time? Do you think this would be possible on the nexus 4?
Has anyone tried this?
Aluzeros said:
Can you charge the galaxy s3 wirelessly and use otg at the same time? Has anyone tried this? Do you think this would be possible on the nexus 4?
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Has anyone tried this?
I would also like to know if this is possible! (on any device)
Galaxy SIII OTG + chariging = NO
I've tried this recently because I needed to know myself.
It is NOT possible to do USB OTG and wireless charging at the same time. Wireless charging simply disables the USB port. And when something is connected to the USB port wireless charging is ignored. Even when only a OTG cable is connected (no mouse or USB stick) wireless charging is not possible.
Sad but true
Edit:
The same applies for the Galaxy Nexus phone with it's pogo-pins for charging. One excludes the other.
The only device that I've found and tested to be capable of USB OTG and charging at the same time is the Nexus 7. (charging trough dock, pogo-pins).
Another way to accomplish USB OTG + charging is to use a edited kernel.. About to try this on de Galaxy Nexus.

OTG and Charge with Verizon Siii

Anyone know if there is a kernal, ICS or JB, that allows USB OTG access to a thumb drive and charging of the Verizon S3 at the same time?
My S3 is still running Beans ICS revision 15, and Samba share works great to feed movies from the USB to my kids nooks in the car, but would like to charge at the same time.
TIA
You have a link to the OTG cable you would use to pull that off?
Or would you get juice from a powered hub, maybe the device you are talking to?
My OTG cable only has a plug to go in the phone, and a plug for a USB device - that's it. No place to plug a cable in to add power to the equation, like the MHL cable has.
(both cables samsung OEM)
Are there aftermarket OTG cables with power input?
I really don't know how comfortable I would be using OTG with anything other then a samsung OEM cable. Have you seen this thread?

[Q] USB OTG Cable with additional power

Hello, we all know that there are USB OTG Cables with extra power plug (Y cable) but those are supposed to power external device like HDD, DVD, or anything what consumes more power than our android device can handle.
But my question is: is there any USB OTG cable with additional power plug but for simultaneous tablet / phone charging while USB stick is used?
I want to watch something long (i.e. TV Show series) from USB stick via OTG cable but I cannot simultaneously charge my tablet, so if it take too long my tablet will be out of power before I stop watching.
blackfire74 said:
Hello, we all know that there are USB OTG Cables with extra power plug (Y cable) but those are supposed to power external device like HDD, DVD, or anything what consumes more power than our android device can handle.
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http://forum.xda-developers.com/showthread.php?t=2617692
Roma-ES said:
http://forum.xda-developers.com/showthread.php?t=2617692
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That means I have to add a resistor only to usb connector or just need a different kernel, or both?
On the native firmware say that this support function is disabled. Personally, I use this CivZ-FLEX-ЛУЧ-REV3.6.2 + SphereXtreme, where works flawlessly with OTG + charging resistor 64.9 K.
I call BS!!!!
I have a stock firmware, and have been using all kinds of USB cables. Found the best are made from Sony/Ericson and Blackberry. Once you have a quality cable your charging issues will go away.
Right now I am using a 7 foot cable that is from a Sony. No charging issues and works perfectly.
Lately I found another MHL cable 2hich is called HDMI to Micro HDMI, and that micro HDMI plug looks exactly like micro USB. Will such cable work with Note 8 properly without additional power?
The version of MHL our device supports requires a power source external to the tablet. That means the adapter itself needs to provide the power (battery or power adapter) or can pull enough off the HDMI cable, which is usually not enough juice to run the connection.
MicroHDMI and MicroUSB are also not physically compatible (won't fit the same port and different pin outs) even if they look so much a like. MHL typically uses MicroUSB at one end and full sized HDMI at the other.
Roma-ES said:
On the native firmware say that this support function is disabled. Personally, I use this CivZ-FLEX-ЛУЧ-REV3.6.2 + SphereXtreme, where works flawlessly with OTG + charging resistor 64.9 K.
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Click to collapse
This is correct u need to put a 63-65 k resistor between ground and Id pin(pin 4 &5) on USB connector. Doesn't work on civatos 4.4.2 as of now. USB host works fine with regular USB host cable but no charging when u use a y cable. I use civatos 4.2.2 kernel also. Works on yyks note 2 4.3 port also..
I have test multiple times. I use a USB dac in car and need charging and USB host.
what resistor should i use on my sghi257m samsung galaxy s4 mini otg usb cable?
on my dads galaxy s5 Active it shows message that says: Do you wanna enable power sharing
is that OTG? on my S4mini nothing pops up
I know this thread is really old but i want to use a USB DAC so need at cable with a resistor as mentioned above but What ROM should I use now?? also is there anywhere I can buy a cable with resistor in it or do i have to do it myself?

MHL + Power Adapter not Charging Device

So I recently got a MHL/OTG adapter off of ebay. The HDMI out and usb ports seem to work no problem. My problem is that when connecting my charging cable to the MHL hub my device isn't getting any power. I have no indications of my battery % going up. That means if I were to stream a movie onto my TV it would work fine but I would run out of battery fast. Does this seem like there's something wrong with the MHL adapter? Is my samsung battery charger not strong enough? Any help with this is greatly appreciated. I have done a bit of research on this and found mixed answers.
Actually... That's normal... An otg adapter puts your device into "power output" mode so it can power a flashdrive or other storage device... So the input/charging mode gets turned off.
Plugging your charger into the hub helps power the external devices so they don't kill your battery so quickly...
No. MHL 3 is meant to charge in parallel. Works on mine. It charges at 700mA only though, pretty slow. You can check the current by Synapse App + Skyhigh Kernel. I think you can configure higher charging rates as well(didn't try). MHL 3 is speced for 2A current.
Yeah... MHL works that way... But the OP says it's also an "OTG hub off ebay" .... So were not just talking about a straight MHL adapter... If it's an OTG hub triggering OTG mode on the tablet... Then it won't charge and it's not suppposed to.
xmilar said:
So I recently got a MHL/OTG adapter off of ebay. The HDMI out and usb ports seem to work no problem. My problem is that when connecting my charging cable to the MHL hub my device isn't getting any power. I have no indications of my battery % going up. That means if I were to stream a movie onto my TV it would work fine but I would run out of battery fast. Does this seem like there's something wrong with the MHL adapter? Is my samsung battery charger not strong enough? Any help with this is greatly appreciated. I have done a bit of research on this and found mixed answers.
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Hi, I also have a MHL/OTG adapter like yours (MHL/OTG/Card Reader) MHL-HDMI works flawless but OTG doesn't.
A USB pendrive that works flawless with an OTG cable it doesn't recognized in the hub while MHL>HDMI it's working.
@xmilar can you please post the link to the MHL/OTG adapter you bought and while yours not charge, are MHL+OTG working simultaniusly?
Thanks!
I've looked into MHL adapters for my Tab S 10.5 and LG G3 but it would require multiple cables and if I replace either or both items and the new item uses a different MHL, I would have to spend more money. I ended up just buying a Chromecast that does the same thing and wirelessly. Best $30 I spent
Hello, I ve bought an MHL adapter, the one with usb connector to charge the tablet when using the mhl, anyway nothing is working. The tablet doesnt charge, and shows 2 times the following : HDMI Connected, then after one second HDMI disconnected, two times. On my Sony phone works with no problems. I have skyhigh kernel and stock rom.
Probably it's not MHL 3?
Sorry for the late reply, if is not MHL 3 why is it working on my Sony Z1 compact with 4.4.4 rooted also.
If the adapter works on a Sony device then its probably based on a standard micro USB connector. According to the wikipedia entry for MHL newer samsung devices use a propriety 11 pin micro USB connector for MHL. There is mention of a "tip" to adapt between 11 pin and 5 pin, perhaps you could buy one of these?

USB OTG Host and Charging simultaneously

Considering to use a Huawei Mediapad X2 7.0 for my 2DIN car install, since the dimensions of the tablet are nearly identical to 2DIN,
Therefore I would like to know if the device supports USB OTG Host mode and charging the battery of the mediapad simultaneously using a certain Y cable?
Thanks, much appreciated if you can give it a try!
FrankZZ said:
Considering to use a Huawei Mediapad X2 7.0 for my 2DIN car install, since the dimensions of the tablet are nearly identical to 2DIN,
Therefore I would like to know if the device supports USB OTG Host mode and charging the battery of the mediapad simultaneously using a certain Y cable?
Thanks, much appreciated if you can give it a try!
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Not sure about OTG Host cum charging combination because my understanding if you use OTG Host mode very likely you plug in a USB OTG thumb drive meaning you cannot charge at the same time.
However connecting the X2 micro USB port via standard USB cable to my laptop, I noticed I could use it as an USB device and it charges at the same time albeit not as as fast as a dedicated charging.
kpcheang2 said:
Not sure about OTG Host cum charging combination because my understanding if you use OTG Host mode very likely you plug in a USB OTG thumb drive meaning you cannot charge at the same time.
However connecting the X2 micro USB port via standard USB cable to my laptop, I noticed I could use it as an USB device and it charges at the same time albeit not as as fast as a dedicated charging.
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Yes, but not OTG.
I can confirm that, on my side, using an OTG hub with a external power plug, no way to have the device charged by external power when in OTG mode.
It is OTG or Normal charge and functions via USB.
Seems Logical because the Phone is supposed to provide the power to its USB accessories in OTG. Just my HUB has a switch that provide power to those accessories instead of the phone Itself. May-I add that switching this power button on the HUB does not function until you had unplugged & replugged the Hub in the phone after switching between the two modes. I'm afraid of the survival of the Micro USB plug of my phone, on the long run, with all those plugin, unplugin actions !!!
It's possible but with anothere Device the Nexus 7 (2012/2013) with Timurs Kernel. What's the difference of this kernel to the normal kernel, so OTG with charging is working for this device,too.

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