The official Galaxy S II press conference has only just begun (it's streaming live now), but all 3 carriers we've been expecting to see the S II on - Sprint, AT&T, and T-Mobile - have already sent out their press releases.

The Galaxy SII is already available in Europe and Korea, debuting as Samsung's fastest selling smartphone to date. The 3 variants in the U.S. will share many of the same specs, but some aspects, such as the screen sizes, battery capacities, and mobile radios, will be different.

Here are some of the common specs:

  • Blazing fast 1.2GHz dual-core Exynos processor
  • Super AMOLED Plus display
  • 8MP camera capable of 1080p video - the S II takes some of the best video we've seen on any phone
  • 2MP front-facing camera
  • 16GB built-in storage
  • microSD card slot with support for 32GB
  • HDMI out at 1080p
  • Android 2.3 (most likely 2.3.4)
  • 4G of some kind (HSPA+ on T-Mobile and AT&T, WiMax on Sprint)
  • 802.11 a/b/g/n Wi-Fi
  • On-device encryption of user data
  • Voice Talk voice commands (this is not the same as Google Voice Search)
  • Screen Capture built right in (press the Power+Home keys simultaneously)

One specific spec worth highlighting is Samsung's Exynos processor, which should be quite a bit faster than the Tegra 2 that most dual-core phones have been using so far (with the exception of the TI OMAP on a few models). At 1.2GHz, the 2 cores should be mind-blowingly fast - faster than anything we here in the U.S. have experienced before.

Sprint will be offering the SII (labeled as the Epic 4G Touch) starting September 16th, at $199 for a new two-year agreement. The other two providers have yet to reveal their planned release dates (AT&T's released is rumored to be September 18th), but you can bet they will be at least somewhat in line with Sprint.

Below, I've highlighted (in bold) some of the specs that vary between the three devices.

Sprint Galaxy S II Epic 4G Touch

Here are the official specs for Sprint's SII:

  • Samsung Exynos™ 1.2GHz dual-core processor
  • 4.52" Super AMOLED Plus display
  • 800x480 WVGA resolution - yikes, we were hoping for a bit more on such a large screen
  • Dual cameras: 8MP, rear-facing camera/camcorder with auto-focus and flash that shoots video in 1080p HD high profile and 2MP, front-facing camera ideal for self-portraits or video chat
  • 16GB of on-board memory, as well as a microSD card slot that supports up to a 32GB memory card.
  • 3G/4G Mobile Hotspot capable, supporting up to eight Wi-Fi enabled devices on the Sprint 3G or 4G network
  • Voice Talk by Vlingo™ allows users to give their Epic 4G Touch voice commands, including voice dial, text message, navigation, music, Web browsing and search
  • Task Manager enables users to view and close the applications they have active and any items that may have been downloaded and to check on memory usage via the Task Manager widget
  • Screen grab feature allows users to easily take a screen capture of the phone screen by pressing the power button and the home key simultaneously
  • Samsung’s TouchWiz user interface provides superior multitasking and customization for an enhanced visual and intuitive smartphone experience
  • Wi-Fi 802.11 b/g/n/a capable
  • Visual Voicemail
  • Enterprise functionality provides support for exchange device management policies, offers increased security of data and services and enables mobile conferencing while on the go
  • microSD card slot that supports up to a 32GB memory card
  • Stereo Bluetooth Wireless Technology 3.0
  • Sprint applications, including Sprint Zone, Sprint TV & Movies®, Sprint Navigation and NASCAR Sprint Cup Mobile - these better be removable
  • Samsung Media Hub features thousands of new releases and top-grossing titles from major Hollywood studios and leading TV networks, including NBC Universal, Paramount, MTV, Warner Bros., CBS and FOX.
  • Samsung Social Hub allows users to transfer email, instant messaging, contacts, calendar and social network connections, including Twitter, Facebook and LinkedIn accounts, into “Feeds” and “Messages” folders that can be either put into separate tabs or combined into comprehensive lists.
  • Dimensions: 2.7 inches x 5.1 inches x 0.38 inches (LxWxT)
  • Battery: 1800 mAh Lithium-ion battery
  • Weight: 4.55 ounces

The Epic 4G Touch will be available September 16th for $199.99.

AT&T Galaxy S II

And here are AT&T's official specs:

  • 4G – HSPA+
  • Android (2.3 Gingerbread)
  • GSM  Quad-band (850/900/1800/1900MHz)
  • UMTS Tri-band( 850/1900/2100MHz)
  • 16GB of on-board memory, as well as a microSD card slot that supports up to a 32GB memory card.
  • Screen: 4.3” Super AMOLED Plus
  • Processor: 1.2Ghz x 2 (dual core)
  • Camera:  8MP AF with LED flash + 2MP front
  • Video Record: 1080p Full HD
  • HDMI Out: HDMI via HDTV Smart Adapter with HDCP
  • Connectivity:   Wi-Fi 802.11 a/b/g/n, Bluetooth 3.0
  • Battery: 1650mAh
  • Sensor: Motion UX, 6-axis gyroscope, proximity, light, noise (Audience A2220)

The word on the street is AT&T's variant is going to be released September 18th. The price is unknown at this time.

T-Mobile Galaxy S II

Update: T-Mobile provided no details in their press release, but we've reached out to them, and here's what they had to say (no surprises there):

Please find the following information which we can confirm about the T-Mobile Samsung Galaxy S II device:

  • Galaxy S II is a 4G smartphone powered by the latest version of Android Gingerbread
  • With a 4.52-inch Super AMOLED Plus display, T-Mobile’s Galaxy S II has one of the largest screens available on a Galaxy S II device
  • Galaxy S II will have pre-loaded entertainment features, including Samsung Media Hub, T-Mobile TV and Netflix
  • Improved Samsung TouchWiz user interface and six-axis motion sensing accelerometer and gyroscope
  • Samsung Social Hub service
  • 16GB of installed memory and a microSD card slot that supports an additional 32GB memory card
  • Convergence features (view Samsung press release for specifics)
  • Enterprise solutions (view Samsung press release for specifics)
  • 8-megapixel rear facing camera with autofocus and flash and 1080p HD video recording/2-megapixel front facing camera
  • Voice Talk, Task Manager, Samsung Kies Air, and Screen Grab Feature (view Samsung press release for specifics)

We’ll have more exciting details to share in the coming weeks!

So, who's picking up one of these bad boys? Our fearless leader Artem is upgrading his EVO 4G - who else?

Source: AT&T PR, T-Mobile PR, Sprint PR