"Excellent phone quality, good calendar functions, useful navigation"4.5 starson by rdferriss
Pros: Phone audio quite good, additional features work well.
Cons: Is there a way to open email?
Summary: I have used a few PDA's and prefer the Z9, as it is smaller, lighter, and I would rather have a useful numeric pad than a keyboard. The cost for internet access is also half the monthly cost than that of a PDA.
The phone has very good audio quality and volume (a plus if you are in a noisy environment, or you have some high frequency hearing loss). I really like the ability in the calendar to do relative scheduling (i.e. a recurring appointment on the second Tuesday of the month, etc.).
The navigator function (Telenav) is a tad slow to initialize, but quite usable and useful.
I don't use the music features, and don't do much texting, so I can't comment on those aspects.
Unlike some phones, the alarm function works even if the phone is turned off. - Useful in traveling!
I highly recommend this phone if you primarily use it as a phone, as a calendar, to read email (not to write lengthy emails) and for navigation.Updated
Under "Cons" I meant to say "Is there a way to open email attachments?" The email itself works well.