  The charmed B decays, $B\to DP, ~D^*P$ and $DV$, are re-analyzed using the
latest experimental data, where $P$ and $V$ denote the pseudoscalar meson and
vector meson, respectively. We perform global fits under the assumption of
flavor SU(3) symmetry. The size of the decay amplitudes and the strong phases
between the topologically distinct amplitudes are studied. Predictions of the
related $B_s$ decay rates are made based upon the fitted results. We also note
a serious SU(3) symmetry breaking or inconsistency in the $DV$ sector.
