My previous phone was a Nokia 6600. It had a slow interface for 2006 and come on, I wanted to try somethingn new.Initially, I had planned on exploring my chances of buying a Treo but due to the rates, I gave up my plan. Without much pondering, I went and purchased a Sony Ericsson W810i. Now, it's been four weeks. Let me just give you a brief run thru of features, pros and cons.Features1. This phone is an mp3 player. This phone is a torch/semi flash light(with an SOS signal that can be configured). This phone has flash capability and further doubles up into a digital camera. Overall, it saves a lot of space to use this phone instead of just going out with a standalone mp3 player or/and a digital camera2. The interface is fast. It takes around 8 seconds to get an auto focus and click a picture using the camera. I'll try and explain - to come out of the screensaver you need half a second, to activate camera using the shortcut it takes 3 seconds, a further 2 seconds for auto focus and an additional 1 second to click you picture. Overall,8 seconds to click one image.You can browse thru pictures very quickly. It's around 7 times faster than my Nokia. Images can be clicked in sepia, black and white, solarise(kinda yellowey), negative and normal modes. Brightness can be reduced within the click of a button. I noticed grains on images of larger size. I don't recommend using the flash camera unless you really must. Plus while clicking a video, the light goes on and off, if the flash light is turned on.3. The build quality on the phone is both good and bad. I love the keypad and it is a major improvement from the 800i and sundry walkman phones. It took me three days to get used to the keypad. The dictionary like function on the phone keeps a track of all the words you spell. So they're definitely there the next time around. The front of the phone seems to appear too plastic. Especially the silver scroll keys and sometimes can make your phone look like a dummy piece. The sound speakers are situated on the backside of the phone and can be used conveniently even when the phone is upside down. You can insert your memory stick pro cards even when the phone is switched on. There is NO CAMERA SHUTTER like the previous installment of this phone (800i) The power button is placed most effectively just like the volume buttons on the right side of the phone which can be used for a host number of features.4. The internal memory of this phone is 22mb and the accompanied card contains 512mb worth of memory. The usable memory,however, is only 431mb. Upon connecting to the pc, both are instantly recognized and act as removable drives on the "my computer" icon. The accompanied software is almost brilliant. I loved "Disc2phone" and there is so much more I keep discovering about the other programs. Despite lacking an English Manual, I found I didnt need one because I don't know too many people who would buy a sony ericsson phone and not be techies in their own rights who like to configure things on their own.5. The bundled earphones are sublime. I cannot beleive the sound on these. They cancel all the noises in a room and it's a pleasure listening to beethoven playing away or Enya's mesmerising voice or even Tool's prog metal for that matter. The speakers are satisfactory and could have been louder. If used as a stand alone mp3 player with earphones, the phone would stand for around 6-7 hours.Playing the music without using earphones can eat up battery depending on the volumes of course. It supports m4a, mp3 and aac formats(and a few other formats)6. The messages memory of the phone is limited to around 150+ messages and that is a big blunder. Despite having a 512mb of external storage the phone cannot accommodate a mere 200 messages. The size of notes is limited and you need to make a second note to carry on. Bluetooth transfers to Samsung,Nokia phones runs at 20kbps while it's a consistent 40kbps for Sony Ericsson phones. Very good for transferring media.Pros- It can be called an ipod replacement. I don't use mine quarter as much as I used to. This is owing to the absolutely brilliant earphones that sit within your ear and help you celebrate your time.- I love how the phone slides into a digital camera. Good build quality for the particular feature.- Good standby, saves battery, easy to work with 50% brightness. Even when I reduce brightness from 100% to 50% (lowest possible) there is hardly any noticeable difference on the screen. The keypad is much lighter but that's hardly noticeable.- Fast processor, super graphics and wallpaper options, includes a good browser, calendar, good default themes- The accompanied torch can be used to change a flat tire and can be switched on for 25mins even when the remaining battery is only 15%. (tried and tested)- Good keypad(KEY FEATURE), good playlist configuring options- Excellent software for the phone, mp3s can transferred at variable bit-rates without taking too long- Excellent,fast log, the phones keeps track off the last ten numbers you've messaged and keeps them around for easy usage- It's easy to store numbers cause the phone prompts to save numbers when a call from an unknown number ends- Great handsfree- There is a memory stick converter (The longer ones used in cameras) and that is a handy thing- The MACRO mode helps in copying handwritten/type written documents using the cameraCons- too plastic, looks a bit boring too soon, screen can be scratched if no touchscreen is present- the accompanied tones for messages is sad, the message memory is very limite (Big DEMERIT) and the size of a note is limited- Call quality is not as good as can be- sometimes it takes over a minute for the phone to recognize it has been plugged into a USB slot- the accompanied FM radio needs to be in place to avoid screechiness in sound and proper volume- Even though the phone provides 512mb worth of external memory, only 431mb is useable. Ideally, i'd have liked a one gig card so I could have doubled on my usage.- Not enough upgradations over the W800i. People can settle for that phone because it has a slightly better talk life- IT HAS NO ENGLISH MANUAL- noticeable grains on 2megapixel imagesConclusion,All though I am very happy with this phone, I cant help but throw a fit over the limited message storage, you can save messages onto your pc but come on, who's gonna do that?Buy this phone if you like what you read. Not enough reasons to upgrade for 800i owners. BUT this phone has more appeal than 800i and has better more smooth graphics. There is a much better display and there is an improvement of 25% which I just noticed.However, unlike the 550i , there are no three way speakers and that makes "Stereo Widening" impossible.Overall rating - 7/10Very little to complain about,reallyGood luck,fellow techies