I think you might be somewhat misusing the term OTG. USB OTG has to do with
the ability of a device to switch between being a host on the USB bus to
bring a device, based on which side of the cable it is connected to. Since
all phones used to be only devices, manufacturers started using the term
OTG to mean that their device can also be a host.
The IOIO worked with Android long before any phones had host mode, so the
lack of OTG support in itself is not a problem. Since it sounds like from
your description that you're using the IOIO as a host, it is more likely
that what you're seeing is a result of the bug I linked to rather than lack
of support.
Makes sense?

On Oct 16, 2017 21:28, "Ilan Tal" <[email protected]> wrote:

With the new phones your board simply doesn't exist under OTG. Nothing we
could do would give signs of life.
That is the contribution of the UTB OTG checker programs - they have no
connection to your board.
All of these programs claim that OTG is dead, so big surprise that the
phone can't see your board under OTG.


On Tuesday, October 17, 2017 at 7:21:59 AM UTC+3, Ytai wrote:

> Is this the case for both directions? I.e. the IOIO as either host or
> device?
>
> On Oct 16, 2017 21:11, "Ilan Tal" <[email protected]> wrote:
>
>> Hi Yitai,
>> Unfortunately we have to accept the fact that phones less than about 1
>> year old no longer support OTG.
>> Blue tooth is the only solution.
>> The cable I asked about does nothing.
>>
>> There are several programs to check USB OTG on the phone itself. These
>> are useful as an independent check, independent from your board.
>> Any of them will work on "old" phones but will fail on new phones,
>> indicating that the phone does not support OTG.
>> The cable is simply a red herring and contributes nothing.
>>
>> Too bad that the OTG technology came and went within 5 years, but this
>> seems to be the case.
>> So we will switch our system from OTG to blue tooth.
>>
>> Thanks,
>> Ilan
>>
>>
>> On Thursday, October 12, 2017 at 5:04:44 PM UTC+3, Ilan Tal wrote:
>>>
>>> I would like to ask about the IOIO OTG on the latest phones.
>>> To my amazement many of the latest phones no longer seem to support OTG.
>>> (What I see is that I can't make any connection with Hello IOIO.)
>>>
>>> There is a cable you can buy
>>> https://www.amazon.com/dp/B009YPYORM?tag=won00-20
>>> that seems to solve the problem, but I'd like some feedback.
>>>
>>> Ideally, this might work: plug the micro usb into the phone and then
>>> make a connection between one of the 2 male connectors to the IOIO.
>>> I don't know who has experience with this.
>>>
>>> If that fails perhaps another possibility is to plug the micro usb into
>>> the IOIO and use a male connector to blue tooth.
>>> This is using the cable as a simple pass through, but I might be able to
>>> use the other connector to supply 5 volts to the IOIO?
>>>
>>> Any suggestions?
>>> Thanks,
>>> Ilan
>>>
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