electrown.com S11 and S21 are key parameters in RF engineering representing reflection and transmission coefficients, respectively, used to analyze signal behavior in devices. Understanding their differences is crucial for optimizing your system's performance; read on to explore how these parameters impact your designs.
Table of Comparison
| Feature | S11 | S21 |
|---|---|---|
| Display | 6.2-inch AMOLED, 1080x2400 | 6.2-inch Dynamic AMOLED 2X, 1440x3200 |
| Processor | Snapdragon 888 / Exynos 2100 | Snapdragon 888 / Exynos 2100 |
| RAM | 8GB | 8GB / 12GB |
| Storage | 128GB / 256GB | 128GB / 256GB |
| Rear Cameras | 12MP (wide) + 12MP (ultrawide) + 64MP (telephoto) | 12MP (wide) + 12MP (ultrawide) + 64MP (telephoto) |
| Front Camera | 10MP | 10MP |
| Battery | 4000 mAh | 4000 mAh |
| Charging | 25W wired, 15W wireless | 25W wired, 15W wireless |
| Operating System | Android 11, upgradable | Android 11, upgradable |
| Other Features | Fingerprint (under display), IP68 water resistance | Fingerprint (under display), IP68 water resistance |
Introduction: S11 vs S21 Comparison
S11 and S21 parameters are fundamental in evaluating RF network performance using a vector network analyzer. S11 represents the input port reflection coefficient, measuring how much power is reflected back from your device, indicating impedance matching and return loss. S21 quantifies the forward transmission gain or attenuation between ports, revealing how effectively your signal passes through the network.
Design and Build Quality
The S11 model features a robust aluminum frame with Gorilla Glass front and back, ensuring enhanced durability and premium feel, while the S21 utilizes a similar build quality but incorporates a lighter polycarbonate back option in some variants. Both phones exhibit water and dust resistance with IP68 ratings, though the S11's reinforced chassis provides slightly better resistance to bending and impacts. Precision in the S11's design also includes improved button placement and grip texture, contributing to a more ergonomic user experience compared to the S21.
Display Features and Performance
The Samsung Galaxy S21 offers a dynamic AMOLED 2X display with a 120Hz refresh rate, providing smoother visuals and vibrant colors compared to the Galaxy S11's Super AMOLED screen with a 60Hz refresh rate. Performance-wise, the S21 is powered by the Exynos 2100 or Snapdragon 888 chipset, delivering faster processing speeds and improved energy efficiency than the S11's Exynos 990 or Snapdragon 865. Your experience will be enhanced with the S21's superior display responsiveness and robust performance for gaming and multitasking.
Processor and Hardware Specs
The Samsung Galaxy S21 features the Exynos 2100 or Snapdragon 888 processor, offering enhanced CPU and GPU performance compared to the Galaxy S11's Exynos 990 or Snapdragon 865. Your device benefits from improved RAM options, with the S21 providing up to 8GB LPDDR5 versus the S11's 8GB LPDDR4X, resulting in faster multitasking and energy efficiency. Hardware upgrades in the S21 include a more advanced 5G modem and better thermal management, ensuring smoother performance under heavy usage.
Camera Capabilities
The Samsung Galaxy S21 offers advanced camera capabilities with a triple-lens setup featuring a 64MP telephoto lens, 12MP wide, and 12MP ultra-wide cameras, enabling high-resolution zoom and versatile shooting modes. The S11, by comparison, features lower megapixels and fewer enhancements in image stabilization and night mode performance. Your photography experience will notably improve with the S21's enhanced autofocus, optical zoom, and 8K video recording capabilities.
Battery Life and Charging
The Samsung Galaxy S11 offers extended battery life with a larger 4500mAh capacity compared to the S21's 4000mAh battery, enabling longer usage on a single charge. Both models support fast charging, but the S21 features improved 25W wired fast charging and 15W wireless charging, slightly faster than the S11's 18W wired and 15W wireless charging. Wireless PowerShare functionality is present in both phones, allowing reverse wireless charging for compatible accessories.
Software and User Interface
The S11 features a streamlined user interface focusing on simplicity and ease of navigation, optimized for fast performance with minimal loading times. In contrast, the S21 offers an advanced software experience with more customization options, integrated AI-driven features, and enhanced multitasking capabilities. Both models run on the latest OS version, but the S21's interface supports more seamless interaction with third-party apps and provides a richer, more intuitive user experience.
Connectivity and Additional Features
The S21 offers enhanced connectivity with 5G support and Wi-Fi 6, providing faster internet speeds and more stable connections compared to the S11, which typically supports 4G LTE. Additional features on the S21 include improved camera technology, advanced display quality, and better battery optimization, making it a more versatile device for your multimedia and communication needs. The S11 remains a solid choice for users prioritizing affordability and essential functionalities without the latest connectivity upgrades.
Price and Value for Money
The S11 offers competitive pricing with essential features ideal for budget-conscious buyers, delivering solid value for money without compromising quality. The S21, while priced higher, provides advanced technology and enhanced performance that justify the premium for users seeking cutting-edge capabilities. Your choice depends on whether you prioritize affordability or superior specifications in your investment.
Verdict: Which Should You Choose?
S21 offers a more advanced display technology with higher brightness and better color accuracy compared to the S11, making it ideal for multimedia consumption and gaming. The S11 holds value for users prioritizing affordability and basic functionality without compromising on essential smartphone features. Choosing between the S11 and S21 depends on your budget and performance needs, with the S21 favored for premium experience and the S11 for cost-effective daily use.
S11 vs S21 Infographic
