When recording or playing back a test against a mobile device, the Open Agent instance takes ownership of the device. By doing so, the Open Agent is preventing other Silk Test users from using the device. To enable other Silk Test users to use the device after you have finished recording or replaying tests on the device, Silk Test automatically releases the device when the Silk Test client is closed, when an unattended test process finishes, or when the Open Agent is closed. You can also manually release the device.