Galaxy S21 5G • Unlocked vs Galaxy S23 Ultra • Unlocked

The Samsung Galaxy S21 5G, released in early 2021, and the Samsung Galaxy S23 Ultra, launched in early 2023, represent different generations within Samsung's flagship smartphone series. While both devices operate on the Android platform, the S23 Ultra introduces significant advancements in camera technology, processing power, and overall display quality, reflecting its position as a more recent, premium offering. These differences cater to varying user needs, from everyday functionality to advanced mobile photography and productivity.

When considering the practical lifespan of these devices, several factors come into play, including their release timelines and ongoing software support.

• Release Timeline and Software Support: The Galaxy S21 5G, released in January 2021, launched with Android 11 and typically receives four major Android OS updates and five years of security updates. This means its official software support is nearing its end in 2026. The Galaxy S23 Ultra, released in February 2023, launched with Android 13 and is expected to receive four major OS updates and five years of security updates, extending its support well into 2028.
• Build Quality and Durability: Both devices feature an IP68 rating for dust and water resistance, indicating protection against submersion in up to 1.5 meters of freshwater for up to 30 minutes. The Galaxy S21 5G utilizes Gorilla Glass Victus on the front and a plastic back, while the S23 Ultra features Gorilla Glass Victus 2 on both the front and back, offering enhanced scratch and drop resistance.
• Expected Practical Lifespan: Users prioritizing the longest possible software longevity will find the S23 Ultra offers a more extended period of official updates. However, both devices are built to withstand daily use, with the S23 Ultra having a slight edge in material durability.

The performance of a smartphone is crucial for daily tasks, from launching applications to demanding gaming sessions. Both the Galaxy S21 5G and S23 Ultra deliver capable experiences, though with notable distinctions.

• Processor Capabilities and Responsiveness: The Galaxy S21 5G handles everyday applications and multitasking smoothly, providing a responsive user experience for most tasks. The Galaxy S23 Ultra, being a newer device, features a more advanced processor that offers significantly faster CPU and GPU speeds. This translates to quicker app loading times, smoother transitions, and a more fluid experience, especially with graphically intensive games and complex applications.
• Storage and RAM: The S21 5G is available with 128GB or 256GB of internal storage and 8GB of RAM. The S23 Ultra offers more generous storage options, starting from 256GB and going up to 1TB, with choices of 8GB or 12GB of RAM. The increased RAM in some S23 Ultra configurations can benefit users who frequently switch between many applications or engage in heavy multitasking.
• Battery Behavior: The Galaxy S21 5G is equipped with a 4000 mAh battery. The Galaxy S23 Ultra features a larger 5000 mAh battery. In real-world usage, the S23 Ultra generally provides longer battery life, with users often reporting it can last through a full day of heavy use, partly due to its larger capacity and more efficient components.

The visual experience is a primary consideration for many smartphone users, and both devices offer high-quality displays with distinct characteristics.

• Display Technology and Clarity: Both the Galaxy S21 5G and S23 Ultra feature Dynamic AMOLED 2X displays, known for their vibrant colors and deep blacks. However, the S23 Ultra boasts a higher resolution of 1440 x 3088 pixels (QHD+), resulting in a sharper image compared to the S21 5G's 1080 x 2400 pixels (FHD+).
• Brightness and Refresh Rate: The S21 5G offers a peak brightness of 1300 nits, providing good visibility in various lighting conditions. The S23 Ultra significantly increases this to a peak brightness of 1750 nits, enhancing outdoor visibility and HDR content viewing. Both phones feature a 120Hz refresh rate for smooth scrolling and animations. The S23 Ultra's display is adaptive, capable of scaling its refresh rate from 1Hz to 120Hz, which can contribute to battery efficiency.
• Screen Size and Viewing Experience: The Galaxy S21 5G has a 6.2-inch display, offering a compact and manageable form factor. The Galaxy S23 Ultra features a larger 6.8-inch display, providing a more expansive canvas for media consumption, gaming, and productivity tasks.

Camera capabilities are a key differentiator between these two Samsung flagships, with the S23 Ultra introducing substantial upgrades.

• Main Camera System: The Galaxy S21 5G features a versatile triple-lens system with a 12MP wide-angle, a 64MP telephoto with 3x hybrid optical zoom, and a 12MP ultrawide camera. The Galaxy S23 Ultra elevates this with a 200MP wide-angle main sensor, two 10MP telephoto lenses offering 3x and 10x optical zoom, and a 12MP ultrawide camera. The S23 Ultra's higher megapixel count on the main sensor allows for greater detail and flexibility in cropping.
• Low-Light Photography and Video: Both devices are capable of capturing quality images in various lighting conditions. The S23 Ultra, with its larger sensor and enhanced processing, generally offers improved low-light performance, capturing brighter and more detailed images in challenging environments. Both phones support 8K video recording, with the S23 Ultra capable of 8K at 30fps, compared to the S21 5G's 8K at 24fps.
• Front Camera and Audio: The S21 5G has a 10MP front camera. The S23 Ultra features a 12MP front camera, offering slightly higher resolution for selfies and video calls. Both devices provide a good audio experience for calls and media consumption through their stereo speakers.