I'm using Google two-factor authentication on a Galaxy 10.1 tab and receiving notification of a "Sign-in error" for my Google account.
gmail and other Google apps seemed to be working, but I went to the security settings for my account on a different computer ("2-step verification") and revoked the application-specific password for tablet. I then created a new one.
The new password works for gmail, gtalk and other Google apps on the tablet, but I still receive the notification of sign-in error.
I thought it might be one of the apps on the tablet where I'd granted access to my Google account, but couldn't find the culprit. (http://stackoverflow.com/questions/2882253/how-do-i-get-the-logfile-from-an-android-device to review log file, compare with "Connected Sites, Apps, and Services")
Can someone point me to where on the tablet I might be able to track down which app has the problem?
Click this link below, and login your gmail account.https://accounts.google.com/b/0/IssuedAuthSubTokens?hl=en&hide_authsub=1
Configure "Application-specific passwords" for you android, write a name like "My Android", and press the "generator password" button. and you see a random password.
Login your android gmail with the random password. Then everything is ok.