am 0a6db9be: am 2725a655: Fix a bug in unregisterPhone().

Merge commit '0a6db9bebbd58c6a7e2ad2070d2649a2be57a09a'

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