USB OTG (USB host functionality) on Razr - Working!

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By Karmarock, Member on 16th November 2011, 12:23 PM
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I'm assuming Razr support usb host functionality as the motorola multimedia dock has USB ports.

I connected a samsung micro usb male to usb A female cable to it with a USB key (checked with a pair of models), but couldn't reach its files.
The Razr couldn't see it.

Maybe I'm missing something as I'm new to android world, but USB host functionality right from the phone without too many adapters would be the first thing I would show to any Apple's slave to show what modern phone is expected to do.

Hope I wasn't wrong as USB host capability + Bluetooth 4.0 together with its fast response and good audio were the quite unique specs (at least on the same device) which lead me to invest on it!

Anyone found a solution to use a standard adaptor or are we tied to the motorola multimedia dock (or hopefully at least a smaller proprietary adaptor?)
Maybe something like the Xoom 'desktop hack' could be a solution or is there any simpler one? I don't know exactly if this hack gave also OTG functionality together with unblocking the desktop mode (couldn't understand from what I googled around).

[go directly to the post with the actual findings
http://forum.xda-developers.com/show...1&postcount=31
I'll update this first post with a resume of the findings as soon as I'll have time to ]
16th November 2011, 06:31 PM |#2  
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Check this thread http://forum.xda-developers.com/show...2#post19398196
16th November 2011, 11:04 PM |#3  
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I have usb host cable from my old s2 ,i have tried but doesn't works any usb pendrive or usb mouse/keyboard.


Inviato dal mio XT910 usando Tapatalk
17th November 2011, 06:53 AM |#4  
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can u provide a link where did u buy it?
17th November 2011, 08:20 AM |#5  
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Quote:
Originally Posted by Szadzik

Check this thread http://forum.xda-developers.com/show...2#post19398196

Didn't helped, as from my first post I already checked with a samsung adaptor and didn't worked out of the box.
17th November 2011, 08:33 AM |#6  
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Quote:
Originally Posted by asheg

can u provide a link where did u buy it?

I bought it in a real life store, actually 'Mondadori informatica' which had in stock Razr since the 10th of November.
If it helps it is Model: ET-R205UBEGSTD by Samsung.
I checked it with two FAT32 memory sticks and didn't worked
17th November 2011, 01:53 PM |#7  
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It's useless.
You need a powered USBHost cable, so you need to connect the 5V to an external battery or an external power supply, and TX/RX to the USB end of the device you are connecting to the phone.

Or, alternatvely, you need a powered USB Hub.


It won't just work. Motos don't give any output power from the USB.
19th November 2011, 06:47 PM |#8  
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so did anyone find working otg usb host so far?
22nd November 2011, 03:13 PM |#9  
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i have the proper nokia cable which works on the Xoom but it wil not work on the RAZR (i assume) until like the Xoom a custom kernel can be installed to access this feature.

dont see that coming anytime soon (least not Verizon RAZR)
22nd November 2011, 10:24 PM |#10  
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Can't you all read what someone writes prior you?
USBOTG WORKS ONLY IF EXTERNALLY POWERED. HARDWARE LIMITATION.
23rd November 2011, 09:10 AM |#11  
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Quote:
Originally Posted by kholk

Can't you all read what someone writes prior you?
USBOTG WORKS ONLY IF EXTERNALLY POWERED. HARDWARE LIMITATION.

If OTG functionality were just a matter of powering a device with an external source that would not be a big issue considering the avaiability of power reserve devices.
I think a step forward in understanding Razr's OTG capabilities will be given dismantling a multimedia docking station and playing with it as soon as it will be available.
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