Phone, Smartphone, Notebook and Gadget Reviews and buyers guide
Phone Notebooks & Tablets Gaming Gadgets iPhone & iPad Shop Forum


Home -> Phone Reviews -> Sony Ericsson K800i

Sony Ericsson K800i Cyber-shot

Editor's rating (1-5): rating starrating starrating starrating star
Discuss this product
Where to Buy

Review posted Sept 25, 2006 by Tong Zhang, Senior Editor

Editor's note: Read our review of the Sony Ericsson K850i, released in Oct. 2007 to replace the K800i.

At the end of February 2006, Sony Ericsson announced the K800i and K790i phones that would be the first handsets to carry the Cyber-shot brand in mobile phones. Both models come with an integrated 3.2 megapixel digital camera with autofocus, Xenon flash and Sony Ericsson’s own BestPic imaging technology. Fast forward a few months, mobile users in the US have quite a few choices when it comes to mobile phones with high-end digital cameras (2 megapixels or greater). The Samsung a990 offered by Verizon and the Nokia N80 and N73 sold either direct from Nokia’s web site or through importers have made their ways onto US shores. Like the Nokias, the Sony Ericsson K800i isn’t offered by any US carrier, but you can buy it from importers such as Dynamism who supplied our review unit. Besides the high-end camera and imaging features, the K800i also sports a 2” QVGA display, 64MB internal memory and Memory Stick Micro expansion slot, full HTML browsing with RSS feeds and Google Search, Bluetooth 2.0 and synchronization to PC. The Sony Ericsson K800i is a dual-mode UMTS handset that operates on 900/1800/1900MHz GSM networks and 2100MHz UMTS networks. You’ll get GPRS for data in the US (no EDGE in the 800i) and 3G only in Europe (the US uses the 850 and 1900MHz bands for 3G, not 2100MHz).

What’s the difference between the nearly identical K800i, K790i and K790a? The K790i is triband (900/1800/1900MHz) with EDGE but no 3G. The K790a is triband (850/1800/1900MHz) with EDGE, no 3G and is targeted at the US.

Sony Ericsson K800i

Design and Ergonomics

The Sony Ericsson K800i comes in black (Velvet Black in Sony Ericsson marketing language) with silver accents and has a business look with a touch of Euro chic style (they also make the phone in brown). The candy bar phone feels good in hand and is small enough to fit in a pants pocket or a shirt pocket. The phone looks well built and has a nice weight (4.1 ounces) to it. It’s very similar in size and weight to the Nokia N73 with which it competes on the camera (but not smartphone) front. The crisp 2” QVGA screen occupies almost half of the front face with the earpiece, a VGA video conferencing camera and two photo keys above it and the thumb stick navigation control and menu buttons below. The thumb stick is raised a bit to give you better control ability. The left and right selection keys and the Back key as well as Clear key flank the thumb stick. You will also find a small shortcut key that launches the web browser to the left of the Back key and the left selection key cluster; and a shortcut key to launch active menu to the right of the Clear key and the right selection keys.

back of K800i

The number keypad lives below the control/navigation/menu keys and the number keys are backlit and in narrow rectangular shape. The keys are bit too narrow for users with large thumbs to press comfortably. The Sony Ericsson K800i has reasonable number of keys and controls on its sides: the music play/stop button lives on the left side with the Memory Stick Micro (M2) slot right below it while the volume up and down buttons (also used for camera digital zooming), the camera launch/shutter button and the IR window live on the right side of the phone.

Turn the K800i around and you will notice that the Sony Ericsson looks much like a small digital camera, similar to many Sony Ericsson camera phones. One bonus feature being a Cyber-shot phone is that the K800i has a lens cover that slides down, just like many Sony Cyber-shot compact digital cameras, to reveal the camera lens and the self-portrait mirror. The drawback is that this large lens cover assembly sticks out a bit. Above the lens, you will find the Xenon flash. To the right of the camera is the loud speaker and to the left is the battery door. Slide the battery door open you will find the included Li-Polymer battery and the SIM card underneath the battery. You will find the power on/off button on top of the phone and the charging/headset port on the bottom along with a hand strap holder.


Phone Features and Reception

As mentioned before, the Sony Ericsson W800i operates on the 900/1800/1900MHz GSM bands. In the US, T-Mobile users can take full advantage of the 1900MHz as T-Mobile operates mostly on that band. Please note that you can not take advantage of the 3G UMTS fast data network supported by the K800i on 2100MHz since they are no 2100MHz networks in the US. If you travel to Europe where 2100MHz UMTS is deployed you can get fast data speeds with the K800i. As a back up data connection, the K800i offers the good ole GPRS and the connection speed on T-Mobile is about 35k/s.

The K800i gets very strong signal with a T-Mobile SIM in both North Dallas area and downtown Los Angeles, both areas are known to have excellent T-Mobile coverage. The voice quality is good on both incoming and outgoing ends. The volume isn’t the highest we have heard, but it’s loud enough for most environments. The Sony Ericsson offers some popular phone features such as call forwarding, call waiting, 2 voice lines and conference calling. You can assign speed dials from number 1-9 on the number pad and since it’s an international phone, you can also assign default languages either by the SIM settings or from a list of languages. If you are lucky enough to be in an UMTS coverage area, you can make video calls with the K800i. But make sure both you and the call recipients are in the UMTS coverage areas with subscription. The Sony Ericsson also offers voice dialing feature via voice tags. You will need to pre-record your voice commands and contact names to use voice dialing. Make sure that you record the tags in a quiet environment for the best results.

When Sony Ericsson came out with the K800i, they really had Europe in mind for fast data via UMTS while the K790i and K790a offer EDGE for fast data. So the downside of this decision is that you will have only GPRS speed for this EU 3G phone in the US. At least you get the very capable NetFront browser to enhance the surfing experience. While the browser can’t complete with the Nokia S60 3rd Edition’s outstanding browser, it does offer full HTML browsing and can display most of the web sites we threw at it. While the connection speed is abysmal in dslreports speed test, the web page download speed isn’t too bad and the phone can download most mid to heavyweight web pages. The browser also supports landscape viewing and options to clear cookies, cache and passwords. You can also go to a link on a web page or highlight a phone number on a web page to dial it. The K800i has a list of major phone carrier settings and you can choose one from the list to set up the data connection for your carrier.

side view
side view


The phone supports SMS, MMS and email. Before you can send MMS messages you must set up a MMS profile. The Sony Ericsson K800i has 4 pre-installed MMS profiles including E-Plus, T-Mobile, Vodafone and O2 MMS. If you are not on any of these networks, go to and go through the a short process to get the settings sent to your phone. The email client supports POP/IMAP4 and P-IMAP (standard push email). The K800i has an intuitive walkthrough to help you set up email accounts. One additional app in the Messaging group is the RSS reader that even supports images in feeds. It works in the similar way to the Nokia S60 series RSS reader and updates feeds quite fast. You can enter a new feed manually, or if you are on a web site that offers RSS feed you can just go to the menu to save the feed to your RSS list (he browser will grab the RSS URLs for you). You can also schedule the RSS reader to automatically update all your feeds every hour, twice a day, once a day or once a week. RSS junkies will love this application!

The Sony Ericsson K800i feels speedy in most applications and tasks even when it’s running several applications and games. Video play, 3D gaming, email download and other demand apps feel pretty zippy. Thanks to the slow data speed in the US, the only thing that’s slow is when you download large web pages (800k-over 1MB per page). The K800i comes with 64MB internal memory which is good enough for installing some additional applications, storing some tunes and a few photos and videos. But if you need more memory, you can take advantage of the Memory Stick Micro (M2) slot. The tiny Memory Stick Micro, developed by Sony and SanDisk, is about one quarter the size of Memory Stick PRO Duo and is compatible with Memory Stick PRO card readers with an adapter. Since the Sony Ericsson supports multi-tasking, you will run into occasional run-out-memory moments. If the phone feels sluggish or gives you a message that says “can’t go any further”, just reboot the phone.

Display, Gaming and Multimedia

The Sony Ericsson K800i has a 2” QVGA (240 x 320) display that’s capable of displaying 262k colors. The screen is crisp and color saturated; though not the brightest we’ve seen, but very contrasty. It does show off the great photos the phone’s camera takes. The K800i comes with a few still and animated background themes and you can download even more free ones from Sony Ericsson portal.

The music playback quality is very good quality by phone standards using the included stereo headsets and it supports MP3, AAC, AAC+ and eAAC+ formats. The K800i uses Sony Ericsson’s proprietary Fast port headphone connector and comes with a pair of good quality stereo earbuds. Unlike the Sony Ericsson W300i Walkman phone, the K800i’s headset cable doesn’t have a 3.5mm plug. While it can’t compare to the iPod, the Sony Ericsson has enough sound clarity and channel separation that can pass as a good music player on top of a GSM phone. Volume is loud enough for quiet classic pieces and it has decent bass via the earbuds. The bundled music player has an intuitive user interface and supports some basic features such as playlists, shuffle, loop and an equalizer. You can store  music tracks on K800i’s 64MB internal memory or on a Memory Stick Micro card. To get music tracks onto your phone, you can use the Disc2Phone software (download the latest version from Sony Ericsson’s Support site) for ripping CDs or transfer music files via Bluetooth. In addition to the music and video player, the W800i also comes with an integrated FM radio with RDS. You will need to plug in the hands free headset cord since the radio uses the cord as its antenna. The auto search in the Radio program skips ton of stations, so you might want to use the manual search function.

The Sony Ericsson K800i supports Java 3D gaming and is bundled with three Java games: FotoQuestFishing, Mini Golf: Castle and Tennis Multiplay. Games run at good speed and the joystick control feels good. Should you have the need for more game titles you can purchase them from Sony Ericsson’s portal, 3 rd party sites like Handango or from game developers own sites.

K800i and N73

The Nokia N73 and K800i


Though the K800i has a long list of compelling features, the camera is obviously its biggest draw. The 3.2 megapixel camera features an autofocus lens for sharper photos and better depth of field. Most camera phones have a fixed focus lens that is always focused to infinity, meaning your subject might not be at the ideal focus point. Images are truly impressive and make great 4 x 6 prints that rival dedicated 3.2MP cameras from years gone by. The K800i’s photos have good and true color with plenty of saturation, sharpness with very minimal JPEG artifacting and plenty of contrast. The camera won’t disappoint, even if your expectations are high. The Xenon flash is effective and makes The K800i, K790i and a, Nokia N73, Nokia N93 and the Samsung a990 are the current readily available 3MP autofocus cameras on the market.

The K800i clearly holds its own against the competition with more natural colors than the Samsung a990 and better low light performance than the Nokia N73. For well-lit shots, the Nokia N73 smartphone and K800i are neck and neck. If you’re trying to decide between these two, make the decision based on whether you need smartphone features, quad band GSM and EDGE since the cameras are on par (other than low light).


To take a photo, simply slide open the lens cover to launch the camera application. Conversely, closing the lens cover exits the camera application. You’ll hold the camera in landscape orientation with the zoom buttons on the upper left edge and the shutter button on the upper right edge. To engage autofocus, press the shutter button half way down and you’ll here a beep when the lens has focused.

The BestPic option takes a series of 9 shots (think of it as bracketing) and you can select which one you feel is best and save it. This option isn’t available when the flash is in use. The camera has several scene settings: Auto, Twilight landscape, Twilight portrait, Landscape, Portrait, Beach/Snow, Sports and Document. Auto does the job very well in most cases. The K800i can take photos at 4 resolutions: 2048 x 1536, 1632 x 1224, 1280 x 960 and VGA. It has auto, macro and infinity focus settings, flash control including red eye, an image stabilizer, a self timer, white balance, metering mode (whole frame or spot), several effects and two quality settings. That’s plenty enough to make you feel like you’re using a “real” camera. You can print photos over USB to PictBridge printers, or insert the memory card into a PictBridge printer to print photos directly from the card.

The camera can take video with and without audio (you decide), and video quality isn't nearly as impressive as still shot quality. The Nokia N73 has the edge here as does the video-centric Nokia N93.

Sample Photos taken at highest resolution and quality, unedited other than resizing to fit this page. Click on a photo to see a larger image.

sample photo

Nice quality. I took the same photo with the Nokia N73 if you want to compare the two.

sample photo

sample photo


sample photo

We also took this shot with the N73 if you wish to compare .

sample photo

We also took this shot with the N73 if you wish to compare .

sample photo

The K800i had trouble metering correctly for this shot and overexposed the sunlit area while leaving the less lit areas too dark.


The Sony Ericsson K800i has integrated Bluetooth 2.0 with support for some popular profiles such as Hands-free, Headset, Dial Up Networking (DUN), OBEX, Synchronization and even A2DP profile for transmit high-quality stereo audio to Bluetooth stereo headphones. We tested the K800i with a few Bluetooth headsets and the Plantronics Pulsar 590A stereo Bluetooth headphones. The Sony Ericsson sounded slightly muffled when using with the Cardo scala 700 which performed well with the Sony Ericsson W300i. You will notice some digital breakup noise as well via the headset. The volume via the Bluetooth headsets is loud enough for most cases and the range is very good on the scala 700, reaching at least 20 feet. Playing music through the Plantronics Pulsar stereo headphones is a joy with the K800i thanks to the A2DP support. The sound quality does decrease a bit (more muffled), but the bass has more boom and the large earpads on the Pulsar blocks out more noise which produces a more immersive music listening experience. The range between the K800i and the Pulsar also reached at least 20 feet which is very good.

If you have the data plan that lets you use mobile phones as modem, you can use the K800i DUN connection to turn the phone into a wireless modem. Though with slow GPRS speeds don’t expect to have a stellar download speeds. File transferring between the phone and the desktop via Bluetooth is also a useful feature. The transfer speed is good enough for text files and photos, while music files take a bit long:  a 12MB file takes about 3 minutes to transfer from the desktop to the phone.

Keeping Bluetooth radio turned on and working with Bluetooth headsets on the K800i don’t drain battery as fast as they do on the W300i.

Battery Life

The Sony Ericsson W800i comes with a standard Li-Polymer battery (BST-33 model) that’s 950mAh in capacity which is a bit larger than the battery found in the Sony Ericsson W810i and the W300i. The claimed talk time is 7 hours on GSM and 2.5 hours on UMTS. In our tests the talk time seems a bit more optimistic but not by much on a GSM network. We don’t 2100MHz UMTS networks here in the US to test. The claimed standby time is 14 days, which seems close to reality if you don’t use the phone. None of the major tasks you’ll perform such as playing music, taking photos, syncing, accessing PIM information and even keep the Bluetooth radio on effect battery life grossly.


In addition to the web, messaging, multimedia and gaming apps, the Sony Ericsson K800i also comes with a suite of PIM applications including Contacts, Calendar, Tasks, Notes and more. You can store contacts in both the phone’s internal memory and on the SIM card. Each contact entry can have 5 numbers, 2 street addresses and multiple email accounts as well as a web address, birthday and notes for additional info. The Calendar, Notes and Tasks applications along with several other utility apps live in the Organizer folder. Calendar has monthly view, weekly view and appointment view. You can sync the data from the Contacts, Calendar and your notes and tasks to your desktop via PC Suite using the included USB cable. You can also sync via Bluetooth or IR, but USB 2.0 syncing is the speediest. In addition to the PIM apps, you will also get a File Manager application.

For synchronizing to your desktop, you can download PC Suite from PC Suite is a one-stop app that will sync your PIM data, process photos, rip CDs to your phone and more. It’s a Windows-only application.


Though not designed for the US market, the Sony Ericsson K800i is a viable solution in your world phone arsenal. If you travel overseas and you have T-Mobile service in the US, then this is a great phone with strong reception and an excellent digital camera. The photo quality competes head-to-head with other current autofocus 3.2MP camera phones and works well for voice. Now that the Sony Ericsson K790a has been released, it is the better choice for US users; T-Mobile users will gain EDGE data speeds and Cingular users must have the K790a’s 850MHz band.

Pro: Great camera! Lovely screen and reasonably compact given the features inside. The multitasking, 64MB memory and Bluetooth 2.0 with A2DP support put the K800i in the top tier of the feature phone pack. Nice browser, though not the best one, and a good RSS reader.

Con: We wish that the number keys were a big larger. The phone really need more RAM to run multiple applications. The lack of the 850 band and EDGE makes it a bad choice for Cingular users but a fine choice for those in Europe and Asia as well as T-Mobile US users who don't care about data speeds.


Web site:,

List Price: ~ $449 unlocked for use with any GSM carrier

Display: 2.2” 240 x 320 QVGA display, 262K TFT Color.

Battery: 950 mAh Li-Polymer rechargeable. Battery is user replaceable. Claimed talk time: up to 7 hours GSM/2.5 hours on UMTS. Claimed standby time: up to 350 hours.

Performance: 64 megs memory, undisclosed CPU.

Size: 4.1 x 1.8 x 0.9 inches. Weight: 4.1 ounces.

Phone: Dual-Mode, GSM 900/1800/1900MHz; UMTS 2100MHz.

Camera: 3.2 Megapixel camera with autofocus, digital zoom and Xenon flash.  An additional front facing VGA camera for video calls. Can take still shots and video with sound.

Audio: Built-in speakers, mic and Fastport audio out. Polyphonic Sounds 72 voices. Supports vibrating alerts and ringers.

Networking: Bluetooth 2.0 with Stereo (A2DP) support, Infrared and USB 2.0.

Software: Access NetFront browser with RSS feeds, Email and MMS. FM radio, Media player, MusicDJ, VideoDJ and PhotoDJ and 3 bundled games. PIM apps including Contacts, Calendar, Notes, Tasks and utility tools including Alarm clock, calculator, File manager and Stopwatch.

Expansion: 1 Memory Stick Micro (M2) card slot.


All Phone Reviews
Smartphone Reviews
Android Phone Reviews
Windows Phone Reviews
HTC Phone Reviews
LG Phone Reviews
Motorola Phone Reviews
Nokia Phone Reviews
Samsung Phone Reviews
Sony Phone Reviews
AT&T Phone Reviews
Sprint Phone Reviews
T-Mobile Phone Reviews
Verizon Phone Reviews
Unlocked GSM Phone Reviews


All Tablet Reviews
Android Tablet Reviews
Tablet Comparisons
Android Tablet Comparisons



Laptop Reviews
Ultrabook Reviews
Laptop Comparisons
Best Ultrabooks



Bluetooth Headsets
iPhone and iPad Accessories
eBook Readers

iPhone Game Reviews
iPad Game Reviews

iPhone Case Reviews
iPad Case Reviews


RSS News Feed

About Us

Contact Us


Site Map