The call quality is very good overall. The callers sounded clear and loud with no hiss or static. The voice of the callers sounded natural and clean. The callers on the opposite end reported the absence of the background noise. They could hear us sharp and clear. The speakerphone sounds harsh. The voice's pitch sounds lower on the speaker phone. The V-DO coverage of the Style is quite enjoyable. The style has a 624 MHz which has no issues regarding the performance during the launching and switching of applications. the battery life is rated to be 4.5 hours of talk time and about 10.5 days of stand by time.