My S3 Neo supports USB OTG but it cannot provide enough voltage to otg devices.How to fix that???

 

Please don´t start another thread on the same topic, one is enough. Try renaming the title of the original thread to better suit your question.

 

Duplicate thread. Original one here:
http://forum.allaboutcircuits.com/threads/how-to-measure-voltage-on-an-android.118353/
Please start only one thread per question.