I am using this since 7 days. Battery back-up is up-to mark. Voice clarity is ok. Speaker output is also good having flexibility of selecting different music modes for audio.
It is best mobile for users it has more and more bettry backup so it is best mobile
Good Phone, Nice Look, sms and missed call call information show on upper side of phone like smartphones, the only problem i faced is that i can store only two number in one contact entry. The maximum limit of storing number should be atleast three, but overall it is a fine phone.