The Samsung Galaxy S7 was a flagship smartphone released in 2016.

It was a significant upgrade over its predecessor, the S6, with several key improvements.  

Key features:

• Display: 5.1-inch Super AMOLED display with Quad HD resolution  
• Processor: Exynos 8890 octa-core processor
• Camera: 12MP rear camera with Dual Pixel autofocus and f/1.7 aperture lens, 5MP front camera  
• Battery: 3000mAh battery with fast charging and wireless charging support  
• Storage: 32GB/64GB storage options with microSD card slot  
• RAM: 4GB RAM  
• Other features: IP68 water and dust resistance, fingerprint sensor, always-on display  

Pros:

• Excellent camera quality, especially in low light  
• Fast and smooth performance
• Durable build with water resistance  
• Improved battery life
• MicroSD card slot for expandable storage  

Cons:

• Slightly thicker and heavier than its predecessor
• No headphone jack (although an adapter was included)

Overall, the Samsung Galaxy S7 was a highly regarded smartphone that offered a great balance of performance, features, and design. It was praised for its camera quality, durability, and user-friendly interface.