K810i is a great sequent of the K series. It has the dimensions of 106x48x17 mm and it weights 115 g.
K810i is quite thin and elegant.
This model came in black color with silver keyboard and lines on the
side, and a blue backgroung lighting that makes it look even more
attractive.

The keys on the sides are used for volume and MP3 regulation. It has
Java support and games like Tennis and Extreme Snow Boarding, and
additional games can be downloaded from the Internet.
It has three standard Java applications - FaceWarp, HP Print and
Photo Mate, and additional applications can also be downloaded from the
Internet.
The Organiser contains applications like Phone Book, Alarm Clock,
Stopwatch, Timer, Business Card, xchange, Calculator, Calendar, Notes,
Tasks, Flight Mode, Conference Calls, Speakerphone and Vibrating Alert.
Regarding the memory, it has a 64MB of internal memory that is expandable with Memory Stick Micro or M2 memory cards, and an extra 128MB card comes with the phone.
K810i is a 3G phone that supports data transfers in GPRS and UMTS networks, but it doesn't have EDGE support.
It has a NetFront browser, and a standard e-mail clientThe sound quality is great, and during the calls, you can use a speakerphone or earphones.
A mobile phone that is very good, and surely will attract a lot of users with its excellent stuff, like the camera, screen or sound quality.
ADVANTAGES: excellent camera, applications, connectivity, sound quality,
SHORTCOMINGS: maybe keys