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Because android doesn't handle the broken screen problem very well (frankly, it doesn't handle it at all) I bought OTG cable in hope that I'll be able to connect my mouse to the device.

I connected it to the broken phone (Huawei U8500) and nothing happened. Well, I tried my new android phone Samsung GT-S7710 with Android 4.1.2. However, still no effect. I tried USB flash disk, but that didn't do anything at all.

How can I debug the USB OTG function? To find out what's actually wrong?

  • Use adb over Wifi or Bluetooth? – Morrison Chang Sep 16 '14 at 21:58
  • What is ADB? Sometimes comment character limit sucks. – Tomáš Zato Sep 16 '14 at 21:59
  • A tool for developers to communicate between Android and their PC. Unfortunately it needs developer mode to be enabled first which a broken screen might not allow you to do so. – Morrison Chang Sep 16 '14 at 22:02
  • I had fortunatelly enabled that because I thought I'll have some time to make android apps. I didn't even have time to figure out this broken screen issue in two years. – Tomáš Zato Sep 16 '14 at 22:04
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    Are you sure your device is OTG-A (meaning it provides power to a peripheral device)? You might need a powered USB-OTG adapter instead. – filoxo Sep 20 '14 at 2:46
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Maybe try OTG Troubleshooter first to check if your setup is working:

https://play.google.com/store/apps/details?id=com.homesoft.otgtroubshooter

It will check if your device supports 'usb host mode', if your OTG cable is working and if a mass storage device is found.

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