NOTE: When I originally wrote this page in 2010 there were FAR fewer Galaxy models from Samsung.  At that time I had no idea how big the Galaxy branded device list would grow.  It very soon became too big for me to maintain.  Here is an incomplete list of Samsung Galaxy device models, compiled mainly from XDA:

Phones:

Samsung Galaxy Fit GT 5670

Samsung Galaxy Mini

Samsung Galaxy Spica i5700

Samsung Galaxy 5 I5500

Samsung Galaxy Ace S5830

Samsung Mesmerize

Samsung Galaxy 3

Samsung Continuum

Samsung Nexus S

Samsung Nexus S 4G

Samsung Galaxy S 4G

Samsung Galaxy SL i9003

Samsung Galaxy Gio GT-S5660

Samsung Galaxy Y GT-S5360

Samsung Galaxy W I8150

Samsung Infuse 4G

Samsung Epic 4G Touch

AT&T Samsung Galaxy S II SGH-I777

T-Mobile Samsung Galaxy S II SGH-T989

Samsung Galaxy Nexus

Samsung Galaxy Note GT-N7000

AT&T Samsung Galaxy S II Skyrocket SGH-I727

Samsung Captivate Glide

AT&T Samsung Galaxy Note I717

Samsung Stratosphere

Samsung Skyrocket

Samsung Galaxy S Blaze 4G

Samsung Galaxy Player 4.0, 5.0

Tablets:

Samsung Galaxy Tab 10.1

Samsung Galaxy Tab 7.7

All Samsung Galaxy S (1) handset models share the following primary specifications:

• 1 GHz Hummingbird processor
• 512MB ROM
• 4” Super AMOLED display (800 X 480 Resolution, 16.7 million colours.)
• Android 2.1 +
• 5 Megapixel Rear Camera with HD video recording (720P at 30 frames per sec.)
• Wi-Fi 802.11 b/b/n
• Bluetooth version 3.0 with A2DP

However, different variants of the Galaxy S have different hardware features. Some have a front facing camera, some have a flash, and some have a physical keyboard. They also ship in 8GB or 16GB versions with the exception of the Epic 4G which only has 2GB of built-in storage.

Here is a run-down of the different versions of the Samsung Galaxy S smartphone:

Samsung GT-i9000

One of the most popular and widely-sold Galaxy S models.

• Front Facing Camera
• No hardware keyboard
• No flash
• 3 Buttons below the screen (1 physical and 2 capacitive.)
• 119 grams

The GT-i9000 comes in 3 variations:
GT-i9000 – International version sold all over Europe and Asia.
GT-i9000M – Sold in Canada by Bell. (Confusingly, this one was sold as the Vibrant.)
GT-i9000T – Sold in Brazil. Comes with a built-in TV tuner and retractable TV antenna.

It is also sold as the M110S in the South Korean home market.

Samsung SGH-i897 Captivate

• No Front Facing Camera
• No Flash
• No hardware keyboard
• Metallic rear cover
• 4 capacitive buttons below the screen.

Sold by AT&T in the U.S. and Rogers in Canada

Samsung T959 Vibrant

• No Front Facing Camera
• No Flash
• No hardware keyboard
• 4 capacitive buttons below the screen
• 118 grams

Sold by T-Mobile in U.S.A.

Samsung Epic 4G

• Front Facing Camera
• LED Flash
• Hardware keyboard
• CDMA Model
• 155 grams

Sold by Sprint in the U.S.  Also known as Galaxy S Pro

Samsung Fascinate

• No FFC
• No physical keyboard.
• 4 capacitive buttons similar to the Captivate
• CDMA Model
• 116 grams

Sold by Verizon in the U.S.