Galaxy S21 Ultra 5G • Unlocked vs Google Pixel 9 • Unlocked

The Samsung Galaxy S21 Ultra 5G, released in January 2021, and the Google Pixel 9, launched in August 2024, represent different generations of flagship smartphones. While both devices offer premium experiences, the Pixel 9 introduces more recent advancements in processing power, camera technology, and software longevity. Both operate on the Android platform, but they offer distinct approaches to user experience and feature sets.

When considering the long-term usability of these devices, their respective release timelines and software support policies are key factors.

• Release Timeline: The Galaxy S21 Ultra 5G was released in early 2021, making it an older device compared to the Pixel 9, which launched in late 2024. This age difference directly impacts the remaining period of official software and security updates.
• OS Support: The Pixel 9 benefits from Google's commitment to extended software support, offering seven years of OS, security, and Pixel Feature Drop updates from its release. The Galaxy S21 Ultra 5G, having launched with Android 11, typically receives three to four major Android OS updates, with security updates extending for a few more years, meaning its official support window is nearing its end or has already concluded for major OS upgrades.
• Durability Features: Both devices feature robust build quality with IP68 ratings for dust and water resistance. The Pixel 9 incorporates Corning Gorilla Glass Victus 2 for screen protection, while the S21 Ultra 5G uses the original Gorilla Glass Victus on both its front and back.

Performance is a critical aspect for daily smartphone use, influencing everything from app responsiveness to gaming capabilities and battery efficiency.

• Processing Power: The Pixel 9 is equipped with a more recent generation processor, designed to handle demanding applications and complex AI tasks with efficiency. This translates to smoother multitasking and faster processing for photo and video editing. The Galaxy S21 Ultra 5G, while powerful for its time, features an earlier generation high-end processor that still manages everyday tasks effectively but may show its age with the most intensive modern applications.
• Battery Behavior: The Galaxy S21 Ultra 5G houses a larger 5000 mAh battery, providing substantial power for extended use. The Pixel 9, with its 4700 mAh battery, is optimized for efficiency, with users reporting it can comfortably last through a full day of typical usage, and even longer with extreme battery saver modes.
• Memory and Storage: Both devices offer ample memory for multitasking, with the Pixel 9 featuring 12GB of RAM and the S21 Ultra 5G available in 12GB or 16GB configurations. For storage, both provide options up to 256GB, with the S21 Ultra 5G also offering a 512GB variant.

The display is the primary interface for smartphone interaction, and both models offer high-quality viewing experiences with distinct characteristics.

• Display Technology and Size: The Galaxy S21 Ultra 5G features a larger 6.8-inch Dynamic AMOLED 2X display, offering a more expansive canvas for media consumption and productivity. The Pixel 9 comes with a 6.3-inch Actua OLED display, providing a more compact form factor.
• Resolution and Clarity: The S21 Ultra 5G boasts a higher resolution of 3200 x 1440 pixels, resulting in a sharper image with a pixel density of 515 PPI. The Pixel 9 offers a Full HD+ resolution of 2424 x 1080 pixels, with a pixel density of 422 PPI, which still delivers clear and vibrant visuals for most users.
• Brightness and Refresh Rate: Both phones feature adaptive refresh rates up to 120Hz for smooth scrolling and responsiveness. The Pixel 9 offers a higher peak brightness of up to 2700 nits, enhancing visibility in bright outdoor conditions, while the S21 Ultra 5G also provides excellent brightness for various environments.

Both smartphones prioritize camera performance, though they approach photography with different hardware configurations and software philosophies.

• Rear Camera Systems: The Galaxy S21 Ultra 5G features a versatile quad-camera setup, including a 108MP main sensor, a 12MP ultrawide, and two 10MP telephoto lenses offering 3x and 10x optical zoom. This allows for significant optical magnification and detailed shots across various focal lengths. The Pixel 9 employs a dual-camera system with a 50MP main sensor and a 48MP ultrawide lens, relying on advanced computational photography and Super Res Zoom for digital magnification up to 8x, without a dedicated telephoto lens.
• Low-Light and Everyday Photography: Both devices excel in capturing high-quality images in various lighting conditions. The S21 Ultra 5G's 108MP sensor and advanced processing deliver detailed and well-exposed photos, particularly in low light. The Pixel 9, known for its computational photography, produces consistently good results with natural colors and excellent dynamic range, especially with features like Night Sight.
• Video Recording and Front Camera: The S21 Ultra 5G supports video recording up to 8K resolution at 24fps and 4K at 60fps, alongside a 40MP front-facing camera. The Pixel 9 records 4K video at 60fps and features a 10.5MP front camera, which is praised for its wide field of view and accurate skin tones.