Από το phonearena :
Voice quality in the earpiece is below average, with muffled voices, hollow sound and insufficient volume. On the other end things were a bit better, but we were told our voice sounded artificial and not clear enough.
Πρώτα απ'όλα είναι κινητό τηλέφωνο.Αν ισχύει αυτό τότε απαράδεκτο