  In the present paper, we study a phase transition problem for the $q$-state
$p$-adic Potts model over the Cayley tree of order three. We consider a more
general notion of $p$-adic Gibbs measure which depends on parameter
$\rho\in\bq_p$. Such a measure is called {\it generalized $p$-adic quasi Gibbs
measure}. When $\rho$ equals to $p$-adic exponent, then it coincides with the
$p$-adic Gibbs measure. When $\rho=p$, then it coincides with $p$-adic quasi
Gibbs measure. Therefore, we investigate two regimes with respect to the value
of $|\rho|_p$. Namely, in the first regime, one takes $\rho=\exp_p(J)$ for some
$J\in\bq_p$, in the second one $|\rho|_p<1$. In each regime, we first find
conditions for the existence of generalized $p$-adic quasi Gibbs measures.
Furthermore, in the first regime, we establish the existence of the phase
transition under some conditions. In the second regime, when $|\r|_p,|q|_p\leq
p^{-2}$ we prove the existence of a quasi phase transition. It turns out that
if $|\r|_p<|q-1|_p^2<1$ and $\sqrt{-3}\in\bq_p$, then one finds the existence
of the strong phase transition.
