The Samsung Galaxy S6 was a flagship smartphone released in 2015. It was a significant upgrade over its predecessor, the S5, with a focus on design, performance, and camera quality 

Key features:

• Display: 5.1-inch Super AMOLED display with Quad HD resolution
• Processor: Exynos 7420 octa-core processor
• Camera: 16MP rear camera with optical image stabilization and 5MP front camera
• Battery: 2550mAh battery with fast charging support
• Storage: 32GB/64GB/128GB storage options
• RAM: 3GB RAM
• Other features: Fingerprint sensor, wireless charging, water resistance

Pros:

• Sleek and premium design
• Powerful performance
• Excellent camera quality
• Fast charging
• Wireless charging

Cons:

• Non-removable battery
• No microSD card slot
• Relatively small battery capacity

Overall, the Samsung Galaxy S6 was a well-received smartphone that set a new standard for design and performance in the Android market. While it may be outdated by today's standards, it was a groundbreaking