I can't believe you only get 30 minutes of talk time. I use my I300 constantly for both conversations and PDA applications. In a typical day, I often have 3 or more conference calls lasting an hour or more each. I've never run out of battery time in a day of usage. You must have a defective unit or battery.

Are the K6035 units new or refurbished? What is required to receive a unit? Can unit be used as PDA only?