The device will makes its debut this spring on the four major wireless carriers: AT&T, Verizon, Sprint and T-Mobile. The company hasn't revealed pricing details.
The S4 boasts several interesting features, including a 5-inch screen, 13-megapixel camera and a Dual Camera mode for shooting photos videos with both the phone's cameras at the same time.
How does the S4 stack up to its current competition? We size up the new Galaxy against Apple's iPhone 5, BlackBerry's Z10 and Windows Mobile device Nokia Lumia 920.
Galaxy S4: 5.3 inches x 2.74 inches x 0.3 inches; weighs 4.5 ounces
iPhone 5: 4.87 inches x 2.31 inches x 0.30 inches; weighs 3.95 ounces
BlackBerry Z10: 5.12 inches x 2.58 inches x 0.35 inches; weighs 4.78 ounces
Lumia 920: 5.13 inches x 2.79 inches x 0.42 inches; weighs 6.5 ounces
Galaxy S4: 5-inch, full HD Super AMOLED screen; 1920 x 1080 resolution
iPhone 5: 4-inch widescreen Retina Display; 1136 x 640 resolution
BlackBerry Z10: 4.2-inch; 1280 x 768 resolution
Lumia 920: 4.5-inch; 1280 x 768 resolution
Galaxy S4: 16GB, 32GB and 64GB models, up to 64GB with micro SD
iPhone 5: 16GB, 32GB and 64GB models
BlackBerry Z10: 16GB model; up to 32GB with micro SD
Lumia 920: Up to 32GB
Galaxy S4: 13-megapixel rear camera; 2-megapixel front
iPhone 5: 8-megapixel iSight rear camera; 1.2-megapixel front
BlackBerry Z10: 8-megapixel rear camera; 2-megapixel front
Lumia 920:8-megapixel rear camera; 2-megapixel front
Galaxy S4: No details from Samsung. We will update when it becomes available.
iPhone 5: Standby: 225 hours; Talk time: 8 hours
BlackBerry Z10: Standby: 13 days; Talk time: 10 hours
Lumia 920: Standby: 320 hours; Talk time: 9 hours
Galaxy S4: Google Android
iPhone 5: Apple iOS
BlackBerry Z10: BlackBerry 10
Lumia 920: Windows Phone 8
Galaxy S4: 700,000
iPhone 5: 775,000
BlackBerry Z10: 70,000
Lumia 920: 120,000
Dual Camera: Takes photos and video with the front and rear cameras simultaneously. Supports video calls with both cameras.
Group Play: Share photos, documents, games between phones without Wi-Fi, cell connection
FaceTime HD: Make video calls on Wi-Fi or cellular networks.
AirPlay, AirPrint: Stream content to television via Apple TV, wirelessly print articles from phone
BlackBerry Balance. Create multiple profiles for personal, work, other needs.
BlackBerry Hub. Quick swipe left of screen to access email, other functions while using any app.
PureView camera. Includes Carl Zeiss wide-angle optics for improved photos.
Wireless charging. Set smartphone on charging plate to refill battery without plugging in.