Now that the last Samsung Galaxy S variant has been launched in the US, we have brought all four devices to one location to give you the opportunity to review each device and to see what each carrier has exclusively brought to the table in order to appeal to consumers.

Each device features Samsung’s exclusive and amazing 4″ Super AMOLED display with WVGA 480×800 resolution offering a clear and rich display, the kind of quality that simply trumps the competition. All four of these devices feature a 5 MP camera which records in 720p High Definition, a micro USB port, 3.5mm headset socket and micro SD slot that supports up to 32GB of additional storage. These Galaxy S phones all feature the fast 1GHz Hummingbird processor. Below you can find each US variant in order of launch date along with a description of what each device has to offer.

T-Mobile was the first US network to launch their Galaxy S phone, which was considered one of the most highly anticipated devices to hit T-Mobile this year, on July 15th. The Vibrant is one of the sleekest looking of the 4 variants and T-Mobile has offered some exclusive content pre-installed on this device, the most notable would be James Cameron’s Avatar movie.

The Vibrant’s 16GB internal storage and pre-installed 2GB microSD card allow you to bring your music, movies and photos with you. The Galaxy S devices all feature a 5MP camera with 720p HD recording, but this device does not have a camera flash. This fact doesn’t sit well with some consumers. With smartphones hitting the market, we still can’t figure out why some variants get a flash and others don’t. Anyone care to elaborate in the comments about this one?

T-Mobile also brings MobiTV and The Sims 3 game preloaded on the device in hopes of bringing in diverse consumers. Overall, the Samsung Vibrant is a great device and I would recommend it to others, as I would any Galaxy S phone.

AT&T’s Samsung Captivate launched on July 18th offering their customers something more than the previous Android 1.6 devices. Coming to one of the larger carriers in the US, the Captivate had much better marketing than the Vibrant as Samsung and AT&T both teamed up to sponsor the 2010 X Games in L.A.

The Captivate features a more rectangular form factor than the other variants and weighs significantly more than the Vibrant which is by far the lightest smartphone I have come across. The Captivate features 16GB internal storage and is not shipping with a pre-installed microSD card. We’re unsure of the reason why, but the Captivate does not feature a camera flash either. Unfortunately, AT&T has disallowed third party applications to their Android devices, but with rooting there are ways around it.

The Samsung Epic 4G is the most unique Galaxy S device to land here in the U.S. as it offers both an LED camera flash and a slide out full-QWERTY keyboard. The keyboard features a fifth row which adds some extra room for the user. Coming as Sprint’s 2nd 4G device, the Epic is also equipped with a front-facing VGA camera/camcorder allowing for video conferencing. The Epic 4G weighs 5.5oz, which is significantly more that the 4.16oz Vibrant due to the added keyboard, but this device feels smooth and is still pocketable.

This device comes with 1GB internal storage and comes with a pre-installed 16GB microSD card. The usual Sprint applications come on this device including the Sprint TV, NASCAR, Sprint Zone, Sprint Navigation and Sprint Football, but it’s not too bad if you are fan of any of those specific applications. The Epic 4G landed on Sprint August 31st and we’ve heard many reports of previous Evo lovers jumping ship for this device.

Sprint is currently selling the device for $249 on a 2 yr. service agreement, but the AndroidSPIN Cell Phone Store has it available for just $199. Sprint’s 4G network isn’t available everywhere, so check to see if you have 4G coverage to get the most out of your device.

The Samsung Fascinate landed in Verizon stores yesterday making all 4 variants available. The Samsung Fascinate resembles the Vibrant in appearance though like the Epic 4G, this device comes equipped with an LED flash.

One of the most notable differences on this device rather than the others is the fact that Google applications like Search and Maps are not coming on the device. You can still download Google Maps from the Android Market, but not Google Search. If you have been following along with the Bing drama that has been going on, apparently when this device receives Android 2.2, you will then be able to get Google’s Voice Search application from the market which will bring back the Google Search you know and love.

Verizon has added some exclusive features to this device like Verizon Navigator, V Cast and they have even thrown in the Blockbuster application. This device is currently shipping with a pre-installed 16GB microSD card.

The Samsung Fascinate is available at your local Verizon store for $199 or you can head to the AndroidSPIN Cell Phone Store and snag this phone up for just $99!

All 4 of the high-end Galaxy S smartphones bring the very latest in mobile technology and while these devices are currently shipping with Android 2.1, Froyo will be hitting them soon to make them even faster. If you are in the market for a smartphone, we definitely suggest you give these 4 devices a look.