Samsung Galaxy S GT-I9003 is branded for India as Galaxy S LCD 4GB but  elsewhere it is available as Galaxy SL (16GB version). Personally, I  would call it a toned down substitute of Galaxy S I9000. It indeed was  surprising to see this version out so late and almost a year after the  launch of Galaxy S I9000 handset. Had the handset arrived alongside or  at least three months after the GT-I9000 launch, it would have made more  sense and would have sold more.
Samsung has introduced this new  Galaxy S LCD 4GB loaded with Android 2.2.1 Froyo by default. Despite  clear technical differences between this handset and the Galaxy S I9000,  people can't help but compare both devices. Throughout the review, I  would be referring it as GT-I9003 and the Galaxy S as GT-I9000, just to  avoid confusion.
Currently, there's a dearth of Galaxy S I9000  handsets and the shortage of Super AMOLED displays has been cited as the  main reason behind this. Obviously, Samsung has moved on to the new  Super AMOLED Plus technology that is better and has been used in  upcoming handset - Samsung Galaxy S II GT-I9100.
GT-I9003
In  the absence of GT-I9000, you'd certainly like to know about an Android  device that looks almost the same and is packed with a few new goodies  in it. Before you get to know how Galaxy S LCD performs, take a look at  the differences between both the phones.
Differentials
Characteristic                 GT-I9003                            GT-I9000
Display Technology      Super LCD (C-Type)                   Super AMOLED
Operating System  Android 2.2.1 Froyo    Android 2.1 Eclair (now with 2.2)
Processor                 1GHz TI OMAP 3630       1GHz Samsung Hummingbird
GPU                         PowerVR SGX530                  PowerVR SGX540
Battery               1650mAh                             1500mAh
Bluetooth                2.1                                   3.0
Storage                4GB                                8GB/16GB
Thickness               10.6mm                             9.9mm
Weight                       131g                             118g
Height                      123.7mm                               122.4mm
From  the above table, it is clear that Galaxy S LCD would stay behind a bit  in terms of graphic and processing performance. Both smartphones have  processors running at the clock speed of 1GHz but due to different  manufacturing design differences, there could be a marginal variation in  their performance. The TI OMAP 3630 CPU is the same which has been used  in the Motorola Droid X.
Design and Build
Firstly, let's  get over the handset's Apple iPhone like looks. Samsung did it with  Galaxy S and now has kept the same design for Galaxy S LCD. When the  Galaxy S GT-I9000 and GT-I9003 are placed next to each other with  non-active screens, there's hardly any visible difference. Technically,  there's a slight difference in weight and height between both devices.  The overall finish of GT-I9003 is almost the same with rectangular Home  button and two capacitive keys - Menu and Back.
Galaxy S GT-I9000 vs. Galaxy S LCD GT-I9003
Galaxy S GT-I9000 alongside the GT-I9003
With  a glossy finish, the plastic body of the GT-I9003 quickly catches  fingerprint smudges and requires frequent wiping to ensure that the  screen appears clean. Despite gaining some thickness and a bit of  height, the new Galaxy S LCD indeed is slim.
Galaxy S LCD has a  4-inch Super Clear LCD display which supports multi-touch and offers  480x800 pixel resolution. It is needless to state the display is big  enough to watch a 720p HD video and pinch-zoom the photos or webpages.  Oh yes, the display does support pinch and zoom gestures for the home  screen, photos, web pages, documents and in several other apps.
GT-I9003 vs GT-I9000
Slim Twins
At  the back, lies a speaker that is decent enough in places filled with  ambient sounds. This smartphone has a 5 megapixel camera albeit without  LED Flash. Looks like Samsung did not hear several users and geeks  ranting about the lack of LED Flash in Galaxy S I9000. Most likely, the  GT-I9003 has been manufactured using the GT-I9000 reference design as  well as parts. The latter seems a more plausible reason.
To  the right lies the Power/Lock button and on the left lies the Volume  rocker keys. On the top lies the 3.5mm audio port and next to it is the  MicroUSB (USB 2.0) port covered with a sliding lid. The SIM card slot  and the microSD card slot are located at the back panel cover. This  phone comes with 4GB internal storage out of which you will get only  1.5GB free for installing apps or putting multimedia on it.
Task Manager
Both  Samsung Galaxy S GT-I9000 and S LCD GT-I9003 have 512MB RAM but since  the latter houses a different processor and GPU, the available RAM is  more - 478MB.
Update: The Super Clear LCD display does come with the Gorilla Glass Technology. 
Operating System and Interface
The  Galaxy S LCD GT-I9003 comes with Android 2.2.1 Froyo by default unlike  the Galaxy S GT-I9000 preloaded with Android 2.1 Eclair. But the recent  Galaxy S GT-I9000 devices already had the Froyo update running on them.  The Android 2.2.1 Froyo richness has Samsung's proprietary TouchWiz 3.0  UI running on it which also brings a few useful features. After unboxing  the smartphone, I plugged it to Samsung Kies to get Froyo build update  and later connected to Wi-Fi for updating the Google Apps.
Galaxy  S GT-I9003 has new lock screen that can be unlocked by swiping on  either sides instead of swiping it upwards. The smartphone retains the  homescreen like the one on GT-9000 and has seven panes. If you pinch  across the touchscreen, you'll get to see all seven panes stacked up in  the editing mode. For adding widgets or changing the wallpaper, press  and hold anywhere on the active homescreen to get the pop-up menu.  Samsung has added a couple of new live wallpapers but do remember that  live wallpapers tend to eat up a lot of battery life. The bottom of the  screen shows the usual icons wherein the right most is the gateway to  the Applications Menu.
Home screen & Apps
The  TouchWiz 3.0 UI over the Android 2.2.1 Froyo brings a built-in Task  Manager which is so amazing that you won't need to install other Task  Managers from the Android Market. The built-in task manager is slick and  very easy to use. It shows details about running apps, downloaded apps,  RAM being used and Storage details.
Samsung bada OS had  intuitive swipe gestures implemented in the Phonebook. The same feature  has been added to the GT-I9003 and so while using the Phonebook, if you  swipe left to right on a contact, you can make a call to that contact.  Swiping right to left will let you compose a new text message to the  respective contact. This swipe implementation is certainly cool. The  Phonebook also gets the SNS (Social Network Services) Integration so  you'll get to see activities of your contacts on Twitter, Facebook,  MySpace and your office's Microsoft Exchange supporting accounts as  well.
Swipe Interface
Most  important improvement has been made in to the Status Bar - the Toggle  switches given in Bada OS have been implemented to the Android 2.2.1  Interface. When you pull down the Notifications bearing Status Bar,  you'll find the Toggle Switches for Wi-Fi, Bluetooth, GPS, Silent Mode  and Auto Rotation lock. That indeed is very helpful. 
Heavy text  messaging users can make the best of the built-in SWYPE feature that is a  predictive text input technology meant for faster text input. It comes  with a very limited library of its own but is programmed to learn from  the words that exist on your mobile in your contacts, texts, notes, web  browsing history and documents. To activate SWYPE, keep your finger tip  pressed in the input area and a pop-up menu option will show up asking  you to choose between SWYPE and Samsung Keyboard. Samsung has also added  the Nuance developed XT9 predictive text input for those who type out  loads of emails and text messages via their phones. Clearly, typing is  good fun for those who try and get used with the SWYPE as well as XT9.  For the rest like me, we will have to struggle with wrong key presses  and use the Backspace key a lot.
ThinkFree documents viewer and  editor comes quite handy while editing your documents while you are on  the move. You can also sync your documents to the ThinkFree virtual  storage if you have an account.
The eBook reader resembles the  iBooks App on the Apple iOS. However, if you are not comfortable with  the UI then you can certainly get the Adobe Reader from the Android  Market.
Ebooks Reader
Social  Hub and Samsung Apps store are pre-installed but it was a bit painful  to get it activated. I had to register with two different IDs for  Samsung Account and Social Hub. Do note that the Social Hub Premium is a  device specific service and the Samsung Social Hub's Facebook Page  clarifies:
Social Hub premium service is device-specific for some  countries. For instance, Social Hub Premium is available on Wave II  (S8530), Galaxy Tab (P1000), and Galaxy Ace (S5830) in India.
This  is an Android handset so you can sync your contacts to your Google  Account. Alternatively, you can save them on Phone or SIM.
Google  Voice Search has been integrated but it hardly worked for me even  though I tried to mimic accents. So, the trick is to choose English  (India) language from Settings > Voice Input and Output > Google  Voice Recognition Settings > Language. After having done that, the  Google Voice search will work like a charm BUT only if you've data  connection active- GPRS or Wi-Fi. I recommend using Wi-Fi settings for  better results.
The only function I found annoying and buggy was  the automatic screen rotation which would turn the portrait mode to  landscape even when I had held the phone upright. I believe Samsung  needs to fix bug with the ASR.
Multimedia Walkthrough
Watching  photos on the phone's 4-inch display is fun. The built-in Gallery App  shows up all photos and the videos on your phone as well as microSD card  storage. The Gallery App has a nice user interface with photos stacked  up and distributed in different album groups like Camera, Screenshots,  Others and Videos in Media. You can edit or share an entire album by  pressing and holding your finger for more than a second. You will get  bars on top and bottom of the window that will offer you options for  selecting the photos and details. You can either Select all or Delete  them all at once. Alternatively, you can share these photos with others  via Picasa, Bluetooth, Gmail or as MMS. You can also arrange your photos  by different options like by date.
Every album will show photos  in stacked or grid views and these views can be adjusted with a small  toggle slider located on the top right corner.
Gallery & Radio
Even  though the smartphone has a 5 megapixel camera sensor, it gives an  average performance with noise in the photo quality. Of course you're  going to miss the LED Flash and it will make several hold a grudge  against Samsung for a long time. The camera has several shooting modes  like single shot, smile shot, panorama and action shot - amateurs can  expect decent performance. Just like other smartphones, the camera  offers Negative, Black & White and Sepia options. You can fiddle  around with the ISO settings and white balance to get the required image  quality.
Samsung has added enough settings for getting good  quality photos which clearly turn futile while shooting after dawn. The  camera is capable of recording 720p HD but there's no HDMI out for  sourcing it to an HD display.
Radio listeners would be pleased with the Stereo FM radio that works with the packed Samsung headsets which has the RDS module.
Music  aficionados will have a good time with the music player that shows four  tabs showing All Songs, Playlists, Album and Artists. Tap on the  capacitive Menu button and choose the Go to Disc View to get the  eye-candy view to see all the songs or album. The music player offers  visualizations for those who wish to enjoy the Spectrum like bar  visualizations when a song is being played. Audiophiles would certainly  love the stock player that plays lossless FLAC files out of the box and  all they need is hook in a good pair of in-ear earphones. Even the  Winamp App for Android plays FLAC files.
You can adjust the  Effects as per your listening habits to choose between Normal, Wide,  Concert Hall, Music Clarity, Bass Enhancement and Externalisation.  For  the music, you can set the Equaliser to presets offered or put it on  your own custom settings.
Video Player
Stock  Video Player in the Galaxy S LCD is a pure bliss as it supports .mkv,  DivX and XviD files out of the box. I loaded a 700MB file on the phone  memory and enjoyed it. Scrolling on the timeline was smooth and the  response was immediate but the video playback stuttered a bit. There's  no reason to pin-point at the PowerVR SGX530 because the video didn't  stutter with RockPlayer Lite to view the video. I expect the planned  Android 2.3 Gingerbread update to bring a better video player that  doesn't stutter during video playback. Though the smartphone's native  Video Player is capable playing .mkv container files, it doesn't support  all video codecs. 
GPS and Layar
GPS locking with Google  Maps was one of the early and crucial issues with the GT-I9000 and I  hoped that it didn't exist in GT-I9003. But I was disappointed  partially. Even this phone continues to have quick GPS locking issues.  Whether I used the GPS or turned on data connection for A-GPS support,  the accuracy level is still around 500-600 meters. It was the same with  my backup phone Nokia E63. Apparently, the smartphone offers A-GPS  support and is dependent on data connectivity to fetch the exact  location.
Anyhow, if you're a Google Maps user then you can make  the best of the Places, Navigation and Latitude layers that have been  pre-installed as separate apps in the Froyo by default.
Layar
Layar  interface is something every Android smartphone owner must use. Layar  is an Augmented Reality browser that shows you digital information that  is around you and your device. It shows all information around you like  the buildings, important structures, restaurants, malls, bus stops,  airport, etc. through the Layar App. For instance, when I fired up  layer, it showed me Open Cell IDs (GSM Network Cells) and number of  restaurants close to my place under the tab - Nearby.
You can  either choose from the digital information available under the tab  Nearby or select appropriate ones from those listed under Layers. If you  go to the Layers tab and choose a Layer like the Open Cell ID, then it  will open up your phone camera. At the top right corner of the screen, a  circular radar shows GSM Cell towers closeby.
After working late  in office, I was hungry. So I simply opened Layer and searched for  Pizza and it showed me details of a Pizza Hut pretty closeby (in around  1KM distance) from my office. Furthermore, you can set filters from the  Categories under Settings to show you relevant information that matters  for you. This is a very nifty but data intensive app.
Battery Life
Samsung  has added a 1650 mAh battery in this smartphone and it certainly adds  extra juice to the smartphone. Since the GT-I9003 comes with a bit  better battery, it certainly offers a couple of hours more than the  GT-I9000. The 1650mAh battery easily fits into the GT-9000 which has  1500mAh battery so for those who're looking for an extra couple of hours  for Galaxy S should totally get this one, if available. Do note that  Samsung has replaced energy efficient Super AMOLED with the Super Clear  LCD and also the battery issues that existed with that Galaxy S have  been fixed.
Normal usage of the phone which involves number of  calls, text messages, listening to music for about 30 mins and web  browsing (over GPRS) for about two hours makes the battery last for  almost about 1.5 days. Whenever I used GPS or downloaded apps over  Wi-Fi, the battery started dropping rapidly. Even while watching an AVI  file that was about 45 mins long, it would eat up about 10 to 12 percent  of the battery life.
You can get up to two days of battery life  if you turn off background data, uncheck Auto Sync and use GPRS only  when required. That would give you a considerably high battery life. To  conclude, I can say that the battery life of this smartphone is decent  and would normally last for more than a day if used judiciously. It  charges in around 2 hours and obviously takes more time if charged via a  USB port.