nfc - ACR 122U connected with android disconnects immediately while touched tags -


i using acr 122u card reader connected android phone via otg cable. tested given code acs (http://www.acs.com.hk/download-driver-unified/5102/acs-lib-android-112-a.zip). reader connects phone successfully. when tags touched reader, reader disconnects immediately. phone model sony m2 dual. same code works fine samsung galaxy note 2 , htc m8. how can overcome problem?


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