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Samsung launched the Galaxy S series of smartphones as four slightly tweaked models across the four major carriers: Vibrant (T-Mobile); Captivate (AT&T); Fascinate (Verizon); Epic 4g (Sprint). While this makes it very confusing for shoppers, it also offers lots of options, if you’re not locked into any one carrier. Looking at the Galaxy S line, but having trouble pinpointing the differences between the phones? We have you covered. Despite the common bloodline, all four models offer distinct features that set them apart from each other. We’ve laid out our impressions and the specifications side by side, so you can see which phone wins out in this Samsung civil war.

If you’re an active social networker and video watcher, the Captivate probably makes a better choice than the iPhone 4, especially if you’re concerned with iPhone’s antenna issues. If you’re more concerned with speedy Web surfing, image and video capture, and video chatting, the iPhone 4 is the only choice. All other things being as equal as they can be (including the $199 price tag), the iPhone 4 is still the AT&T superphone champion, with performance superior in head-to-head comparisons with similar functions on the Captivate. But the margins are narrow enough not to make Captivate an uncomfortable non-Apple choice.

What we like: 4-inch AMOLED display, 720p 30 fps video recording, slim and light exterior, up to 48GB of total storage

What we hate: No flash, no front-facing camera, slow Web surfing

Even if you don’t or won’t have 4G service, the Epic is a flexible, light, fun and easy-to-use superphone. The Epic might be a value match for the EVO, thanks to its super-bright super AMOLED screen, slide-out keyboard and pre-installed 16GB microSD card, and even taking into account its minor operational annoyances and comparative specification failings in camera MP and hotspot connectivity. But given you can buy a 16GB microsSD card for around $25, the Epic isn’t worth an extra $50 unless you absolutely need a slide-out QWERTY keyboard. So far, the Epic is one of the best phones on the market today.

What we like: 4-inch AMOLED display, full slide-out QWERTY keyboard, 720p video recording, front-facing camera, LED flash

What we hate: $50 more than the Vibrant and Captivate, lower max storage capacity, bulkier than other Galaxy S models

T-Mobile’s best all-around Android phone has been the Motorola Cliq XT. It has the same 5-megapixel camera as the Vibrant, only with a flash. But it’s slower for surfing and loading apps than the Vibrant, it has just a HVGA video recorder, a smaller QWERTY, less memory, and a screen nearly an inch smaller. It’s also $70 less than the Vibrant. If you can afford it (and don’t take many indoor pictures), the Vibrant is definitely worth the extra dough.

What we like: 4-inch AMOLED display, 720p 30 fps video recording, slim and uncluttered exterior, 16GB of pre-installed storage

What we hate: Out of sync touch controls, inconsistent network connectivity, no front-facing camera, only 2GB of built-in memory

What we like: 4-inch AMOLED display, 720p 30 fps video recording, slim and light exterior, better battery life than other Galaxy S models, up to 48GB of max storage

What we hate: No flash, no front-facing camera, inconsistent 3G connectivity on T-Mobile

AT&T

Sprint

Verizon

T-Mobile

$199.99

$249.99

4-inch AMOLED Display

480 x 800

480×800

480 x 800

1 GHz Samsung Hummingbird Application Processor

5 megapixels

16 GB internal

1 GB internal, 16 GB microSD included

2 GB internal, 16 GB microSD included

16 GB internal, 2GB microSD included

32 GB microSD

350 minutes

360 minutes

350 minutes

390 minutes

340 hours

216 hours

300 hours

450 hours

128 grams

155 grams

128 grams

117 grams

106.2 mm

124.4 mm

106.2 mm

122.4 mm

63.5 mm

64.5 mm

9.9 mm

15.2 mm

9.9 mm