Joining Sprint’s Epic 4G Touch Galaxy S II launch, AT&T has come out swinging with it’s own version of the popular phone. While Sprint went for more screen real estate with a 4.52-inch display, AT&T kept the more familiar 4.3-inch version and went with an emphasis on how thin the design is.

“The nation’s thinnest 4G smartphone is designed in every way to give AT&T customers a superb mobile entertainment experience,” said Jeff Bradley, senior vice president, Devices, AT&T Mobility and Consumer Markets. “With a vibrant screen, hi-definition possibilities and faster processing speeds, Samsung Galaxy S II is the latest addition to the industry’s leading smartphone portfolio.”

“The Galaxy S II, powered by a dual core application processor, paired with AT&T’s advanced 4G network, gives users fast download speeds along with a premium multi-tasking experience,” said Dale Sohn, president of Samsung Mobile. “We are proud to bring our fastest selling smartphone in the world to AT&T customers, packaging it in the nation’s thinnest 4G smartphone.”

No word yet on a release date or pricing.

AT&T Samsung Galaxy S II

  • 1.2 Ghz dual-core processor
  • 4G – HSPA+
  • Android (2.3 Gingerbread)
  • GSM Quad-band (850/900/1800/1900MHz)
  • UMTS Tri-band( 850/1900/2100MHz)
  • Screen: 4.3” Super AMOLED Plus
  • 8MP AF with LED flash read camera
  • Front-facing 2MP camera
  • 1080p Full HD
  • HDMI via HDTV Smart Adapter with HDCP
  • Wi-Fi 802.11 a/b/g/n
  • Bluetooth 3.0
  • Sensors: Motion UX, 6-axis gyroscope, proximity, light, noise (Audience A2220)
  • Battery: 1650mAh