some external power can be used if hardware has not max. power to hand otg support to windows 10 phone . microsoft do one thing atleast make the os compatible to otg support. if power issue , we can use external power source to run otg.since some android phone support otg only work on external power source the reason is that hardware have not enough power to run otg support in phone. I have done such experiment in android phone, since before rooting my android phone otg not support.
but rooting my phone otg support but with external power.
but rooting my phone otg support but with external power.
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