Merge commit '0a6db9bebbd58c6a7e2ad2070d2649a2be57a09a' * commit '0a6db9bebbd58c6a7e2ad2070d2649a2be57a09a': Fix a bug in unregisterPhone().
Merge commit '0a6db9bebbd58c6a7e2ad2070d2649a2be57a09a' * commit '0a6db9bebbd58c6a7e2ad2070d2649a2be57a09a': Fix a bug in unregisterPhone().