The Samsung Galaxy S21 5G boasts a premium, compact build with a sturdy polycarbonate back and aluminum frame, offering a refined, ergonomic feel. Its flat-edge design enhances grip and modern aesthetics, while the IP68 rating ensures water and dust resistance for added durability. At just 7.9 mm thick and 169 g, it balances portability with a robust structure. The device is available in six vibrant colors, blending style with practicality. The combination of high-quality materials and precise engineering ensures a durable, lightweight form factor that feels both premium and user-friendly in hand.
You might want to check out Samsung Galaxy S21 FE 5G, featuring an upgraded design for a superior experience.
Battery Efficiency
The Samsung Galaxy S21 5G features a 4000mAh battery that supports all-day usage, aided by efficient power management. With 25W fast charging, it recharges quickly, while 15W wireless charging and reverse wireless charging offer versatile power-sharing options. The non-removable Li-Polymer battery balances compact design with endurance, handling moderate to heavy tasks without frequent recharging. Though it lacks a bundled charger, the device’s optimized hardware and software ensure consistent performance. Whether streaming, gaming, or multitasking, the S21 5G delivers reliable battery life, making it a durable companion for daily use.
Take a look at Samsung Galaxy F62 - its improved battery sets a new standard.
Display Specs
The Samsung Galaxy S21 5G features a 6.2-inch Dynamic AMOLED 2X display with a 120Hz refresh rate, delivering buttery-smooth scrolling and gaming. Its FHD+ resolution (1080 x 2400 pixels) and 424 PPI density ensure sharp, vivid visuals, while HDR10+ support enhances color depth for immersive media. The screen’s peak brightness of 1300 nits ensures visibility in sunlight, and Corning Gorilla Glass Victus provides scratch resistance. A hole-punch notch houses the front camera, maintaining an almost bezel-less aesthetic. The 20:9 aspect ratio and always-on display feature balance productivity and convenience, making it ideal for multitasking. Whether streaming, gaming, or browsing, the S21 5G’s display offers vibrant, lifelike quality with precise touch responsiveness and minimal glare.
The Samsung Galaxy S21 5G’s triple rear camera system delivers exceptional versatility and detail. A 12MP wide-angle lens pairs with a 12.2MP ultra-wide and a 64MP telephoto to handle everything from sweeping landscapes to sharp, zoomed-in shots. The system supports 8K video recording, optical image stabilization (OIS), and 3x hybrid zoom, ensuring clarity in motion and low-light scenarios. Features like Phase Detection Autofocus (PDAF), Night Mode, and HDR enhance dynamic range and sharpness, while 4K slow-motion capture at 960 fps adds creative flair. The 10MP front camera excels in selfies with ultra-wide-angle support and dual-pixel autofocus, balancing detail and usability. Whether capturing vibrant scenes, portraits, or action, the S21 5G’s camera system merges advanced optics with intelligent software to produce polished, professional-grade results.
While the Samsung Galaxy S21 5G lacks an explicitly listed price, its 2021 flagship-grade specs—120Hz display, 5G, triple cameras, and IP68 durability—now position it as a budget-friendly option in 2025. Despite no expandable storage, its blend of performance, photography, and connectivity offers strong value for users seeking a compact, capable device without premium pricing.
Raw Performance
The Samsung Galaxy S21 5G delivers flagship performance with its Exynos 2100 5nm chipset and 8GB RAM, ensuring seamless multitasking and gaming. A 749,100 Antutu score underscores its computational power, while efficient hardware and 120Hz display optimize responsiveness. UFS 2.1 storage (128GB/256GB) ensures fast app launches and data access. Future-proof 5G support and optimized power management balance speed with battery efficiency, making it a reliable, high-performing device for demanding users.
Get your hands on realme Q3 Pro if you're looking for better performance.
Pros
Vibrant 120Hz display with HDR10+ and 1300 nits brightness for immersive visuals
Triple-lens rear camera system with 8K video, 3x optical zoom, and AI-enhanced modes
Powerful Exynos 2100 chipset and 8GB RAM for seamless multitasking and gaming
Premium build with IP68 water/dust resistance and lightweight, compact design
Future-proof 5G connectivity and reverse wireless charging for versatility
Efficient 4000mAh battery with 25W fast charging for all-day usage
Cons
FHD+ resolution (vs. QHD+) may feel less sharp for some users
No expandable storage options (128GB/256GB fixed variants)
No included charger in the box, requiring a separate purchase
Lacks a headphone jack in certain regional variants
10MP front camera may not match the detail of the rear triple system
FAQ
Yes, it features a triple-lens rear camera system with 8K video recording capabilities, ensuring high-resolution footage with optical image stabilization.
The S21 5G uses a Full HD+ (1080 x 2400 pixels) resolution display with a 120Hz refresh rate, prioritizing smooth performance over higher resolution.
The battery supports all-day usage with 25W fast charging and 15W wireless charging, optimized for moderate to heavy tasks and media consumption.
No, the S21 5G lacks a 3.5mm headphone jack in some regional variants, relying on USB-C or Bluetooth for audio output.
Yes, it has an IP68 rating for water and dust resistance, making it durable for accidental spills or exposure to harsh environments.
No, the S21 5G offers fixed 128GB or 256GB storage options without expandable memory via microSD.
Compare with other phones
See how this item stacks up against any other model