Galaxy S21 5G Vs Galaxy S21+ 5G

The Samsung Galaxy S21 5G and the Samsung Galaxy S21 Plus 5G, both released in January 2021, are part of the same flagship smartphone generation. While they share many core features and the Android operating system, the primary distinctions lie in their physical size, battery capacity, and the materials used for their construction. These differences cater to varying user preferences regarding portability and endurance.

Both the Galaxy S21 5G and S21 Plus 5G were launched in January 2021, meaning they follow the same software support timeline. Samsung initially promised four major Android OS updates and five years of security updates for the S21 series. As of early 2026, both devices have received their final major OS update (Android 15-based One UI 7) and their last security update was in November 2025, with software support officially ceasing in February 2026.

• Software Longevity: Both models have reached the end of their official software update cycle as of early 2026, having received four major Android OS updates and five years of security patches.
• Physical Durability: Both devices feature Gorilla Glass Victus on the front for display protection and an IP68 rating for dust and water resistance, indicating a similar level of protection against environmental elements. The Galaxy S21 Plus 5G, however, uses Gorilla Glass Victus for its back panel, while the standard S21 5G has a plastic back.
• Expected Lifespan: While software updates have concluded, the physical build quality and internal components suggest both phones are built to last, with their practical lifespan now depending on hardware endurance and user care.

The performance capabilities of the Galaxy S21 5G and S21 Plus 5G are largely identical, as they share the same internal processing hardware and RAM configurations.

• Processing Power: Both phones are equipped with a powerful current-generation processor (either the Exynos 2100 or Snapdragon 888, depending on region) and 8GB of RAM, enabling smooth multitasking, rapid app loading, and efficient handling of demanding applications and mobile gaming.
• Storage Options: Both models offer internal storage options of 128GB and 256GB, providing ample space for apps, photos, and videos. Neither device supports expandable storage via a microSD card.
• Battery Performance: The Galaxy S21 Plus 5G features a larger 4800 mAh battery compared to the S21 5G's 4000 mAh battery. This difference translates to noticeably longer battery life for the Plus model, with users often reporting it can last through a full day of heavy use and potentially two days with lighter usage. The standard S21 5G's battery life is generally considered sufficient for a day of moderate use, but heavy users may find themselves needing to recharge more frequently.

Both the Galaxy S21 5G and S21 Plus 5G feature high-quality displays, though they differ in size.

• Display Technology and Resolution: Both devices utilize a Dynamic AMOLED 2X display with a resolution of 1080 x 2400 pixels, offering vibrant colors, deep blacks, and excellent contrast. The pixel density is slightly higher on the smaller S21 5G (421 ppi) compared to the S21 Plus 5G (394 ppi), though this difference is generally not noticeable in everyday use.
• Size and Refresh Rate: The Galaxy S21 5G has a 6.2-inch display, making it more compact and easier for one-handed use, while the S21 Plus 5G offers a larger 6.7-inch screen for a more expansive viewing experience. Both displays support an adaptive 120Hz refresh rate, providing smooth scrolling and responsive interactions.
• Brightness: Both screens offer high peak brightness levels, ensuring good visibility even in bright outdoor conditions.

The camera systems on the Galaxy S21 5G and S21 Plus 5G are identical, offering a versatile setup for various photography and videography needs.

• Rear Camera Array: Both phones feature a triple-lens rear camera system consisting of a 12MP main wide-angle lens, a 64MP telephoto lens with 3x hybrid optical zoom, and a 12MP ultra-wide-angle lens. This setup allows for detailed photos, good zoom capabilities for everyday use, and expansive landscape shots.
• Photography Performance: Users generally report that both devices capture vibrant photos with good dynamic range in various lighting conditions, including decent low-light performance with Night mode. The telephoto lens provides usable zoomed-in shots up to 10x, though quality can degrade at higher digital zoom levels.
• Video Capabilities: Both models are capable of recording video up to 8K resolution at 24 frames per second, and 4K resolution at 60 frames per second across all lenses, including the front camera. Features like Director's View allow switching between lenses while recording, offering creative flexibility.