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

The Samsung Galaxy S21 5G and the Samsung Galaxy S21 Ultra 5G, both released in January 2021, are part of the same generation of Samsung's flagship smartphone series. While they share the Android operating system with Samsung's One UI interface, they cater to different user preferences. The standard S21 offers a more compact and lightweight design, whereas the S21 Ultra provides a larger display, a more advanced camera system, and additional features for enhanced productivity.

Both the Galaxy S21 5G and the Galaxy S21 Ultra 5G were launched in early 2021, meaning they share a similar timeline for software support and expected practical lifespan.

• Software Longevity: Samsung has committed to providing four generations of Android OS updates and five years of security updates for the S21 series. This indicates that both devices are expected to receive major Android updates, including Android 15, and security patches until early 2026, ensuring continued functionality and security.
• Repairability: The standard Galaxy S21 5G generally has a higher repairability score, often rated around 7.5 to 7.75 out of 10. This is partly due to its plastic back, which is easier to remove, and a more modular display cable, making certain repairs more straightforward. In contrast, the Galaxy S21 Ultra 5G typically receives a lower repairability score, around 3 out of 10, due to the extensive use of adhesive for components like the battery and display, a glass back that is more prone to breakage during disassembly, and a non-modular display cable.
• Build Resilience: The Galaxy S21 5G features a reinforced polycarbonate (plastic) back, which can offer better resistance to cracks from accidental drops compared to glass. The Galaxy S21 Ultra 5G, however, uses Corning Gorilla Glass Victus on both its front and back, providing a more premium feel but potentially requiring more careful handling.

Both devices are powered by the same generation of advanced processors, ensuring smooth operation for most tasks, but they differ in memory configurations and battery capacities, which impact overall performance and endurance.

• Processor Capabilities: Both the Galaxy S21 5G and S21 Ultra 5G utilize a powerful octa-core processor, either the Exynos 2100 or the Qualcomm Snapdragon 888, depending on the region. This hardware enables both phones to handle demanding applications, graphic-intensive games, and extensive multitasking with responsiveness.
• Multitasking and Memory: The standard Galaxy S21 5G comes with 8GB of RAM, which is sufficient for most everyday multitasking. The Galaxy S21 Ultra 5G offers more generous RAM options, typically 12GB or 16GB, providing additional headroom for users who frequently switch between many applications or engage in more intensive professional workflows.
• Battery Behavior: The Galaxy S21 5G is equipped with a 4000mAh battery, which generally provides adequate power for a full day of moderate use, though heavy usage, especially with the 120Hz display refresh rate, may necessitate more frequent charging. The Galaxy S21 Ultra 5G features a larger 5000mAh battery, and in many real-world tests, it demonstrates longer endurance, often lasting a full day or more, even with its higher-resolution display and adaptive refresh rate.
• Storage Options: The Galaxy S21 5G is available with 128GB or 256GB of internal storage. The Galaxy S21 Ultra 5G offers more storage flexibility, with options for 128GB, 256GB, and a larger 512GB configuration. Neither model includes a microSD card slot for expandable storage.

The display is a key differentiator between these two models, with the Ultra variant offering a more expansive and detailed viewing experience.

• Display Technology and Clarity: Both devices feature a Dynamic AMOLED 2X display, known for vibrant colors and deep blacks. However, the Galaxy S21 5G has a 6.2-inch screen with a Full HD+ resolution (2400 x 1080 pixels), resulting in a pixel density of approximately 421 pixels per inch (PPI). The Galaxy S21 Ultra 5G boasts a larger 6.8-inch display with a Quad HD+ resolution (3200 x 1440 pixels), offering a sharper image with around 515 PPI.
• Brightness and Outdoor Visibility: The Galaxy S21 5G can reach a peak brightness of up to 1300 nits, providing good visibility in various lighting conditions. The Galaxy S21 Ultra 5G offers a brighter experience, with a peak brightness of up to 1500 nits, and some sources indicate up to 1600 nits, making it easier to view content clearly under direct sunlight.
• Refresh Rate and Smoothness: Both models feature an adaptive 120Hz refresh rate for smooth scrolling and responsive interactions. A notable difference is that the Galaxy S21 Ultra 5G's display can dynamically adjust its refresh rate from 10Hz to 120Hz, optimizing power consumption by lowering the refresh rate for static content. The standard Galaxy S21 5G adjusts its refresh rate from 48Hz to 120Hz.

The camera systems are a significant point of divergence, with the Galaxy S21 Ultra 5G offering a more versatile and advanced setup for photography enthusiasts.

• Rear Camera System: The Galaxy S21 5G features a triple-camera setup, including a 12MP wide-angle lens, a 64MP telephoto lens with 3x hybrid optical zoom, and a 12MP ultrawide lens. The Galaxy S21 Ultra 5G elevates this with a quad-camera system, comprising a 108MP wide-angle sensor, a 12MP ultrawide lens, and two 10MP telephoto lenses—one with 3x optical zoom and another periscope lens with 10x optical zoom, enabling extensive zoom capabilities.
• Photography Performance: Both phones deliver strong performance in everyday photography, with the S21 5G producing sharp images and handling tricky lighting well. The S21 Ultra 5G, with its larger main sensor and dual telephoto lenses, generally offers superior detail, dynamic range, and more advanced zoom functionality, including improved low-light performance.
• Video Recording and Features: Both devices are capable of recording video at up to 8K resolution. The S21 5G includes features like Director's View, allowing users to switch between cameras while filming. The S21 Ultra 5G also offers advanced video capabilities, benefiting from its more versatile hardware.
• Front Camera: For selfies and video calls, the Galaxy S21 5G is equipped with a 10MP front camera. The Galaxy S21 Ultra 5G features a higher-resolution 40MP front camera, providing more detailed self-portraits.