One of two same (size and configuration) Android devices not recognized when debug mode activated -

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i have 2 android tablets same i.e. hardware, same android version: 5.1 , each has activated debug mode.

the first 1 recognized adb , can work , push app second 1 recognized usb device windows when debug mode deactivated. cannot use second tablet on android studio , can't find hint on problem source.

fyi:

  • no-brand devices
  • cpu : mtk6582
  • android version : 5.1
  • android studio

thank verry help.

edit : used usbdview software info, here screenshot showing results of 2 devices. vendorid value 0000 in debug mode 0e8d when deactivated same value first device's (cf. bottom).

click view screenshot

make sure install driver of each device correctly

if dosent work restart adb 

adb kill-server adb start-server

hope


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