Under "Settings" then under "Developer Options" I enabled "USB debugging"
as per the device's user's manual & I think also T-Mobile's, who say it
must be enabled specifically for to copy data between computer & device.
Under "Settings" then under "Developer Options" I enabled "USB debugging"
as per the device's user's manual & I think also T-Mobile's, who say it
must be enabled specifically for to copy data between computer & device.