Unable to establish ADB connection, phone offline, etc...

This help section includes the ADB connection issue and it show you how can you easily solve it.

SamsungADB

This document created at Sep 14, 2016, 4:07:04 PM and modified at Aug 26, 2026, 9:45:20 PM.

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Unable to establish ADB connection, phone offline, etc...

The problem is:

  • The phone is in offline mode
  • The phone can not be detected correctly
  • The Software asks you to enable USB debugging

Solution:

Check the "Always allow from this computer checkbox when you attach the usb cable

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