Samsung Galaxy S21
Specs
General
| Device Type | Smart Phone |
| Model | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09 |
| Announced | 14 January, 2021 |
| Released | 29 January, 2021 |
| Status | Available |
Design
| Water Resistant | IP68 dust/water resistant (up to 1.5m for 30 mins) |
| Dimensions | 151.7 x 71.2 x 7.9 mm |
| Weight | 171 g |
| Protection |
Glass front (Gorilla Glass Victus) plastic back aluminum frame |
| Colors |
Phantom Gray Phantom White Phantom Violet Phantom Pink |
Display
| Refresh Rate | 120 Hz |
| Display Type Display Technology => A number of display technologies and types used in mobile phones => TFT (Thin Film Transistor), IPS (In-Place Switching), OLED (Organic Light Emitting Diode), AMOLED (Active-Matrix Organic Light-Emitting Diode), Super AMOLED (an even advanced version of AMOLED), Resistive Touchscreen (Resistive touchscreens contain two layer of conductive material with a very small gap between them which acts as a resistance), Capacitive Touchsceen (Capacitive touchscreen technology consists of a layer of glass coated with a transparent conductor) | Dynamic AMOLED 2x |
| Size | 6.2 inches (15.75 cm) |
| Resolution | 1080x2400 px (FHD+) |
| Display Colors Display Colors is refers to the number of different shades of colors that the screen is capable of displaying => 64K colors, 256K colors and 16 million colors, Obviously 16M is highest available range of colors and better than others. | 16M colors |
| Pixel Density Pixel Density (PPI) is refers to the concentration of pixels on a particular display, measured in pixels per inch (ppi). Pixel density is calculated by dividing the diagonal pixel resolution of a display by its diagonal size, higher pixel density better display quality. | 424 ppi |
| Touch Screen | Yes, Capacitive Touchscreen, Multi-touch |
| Display Protection Display Protection => Gorilla Glass is a special alkali-aluminosilicate glass shield with exceptional damage resistance that helps protect mobile displays from scratches, drops, and bumps of everyday use, It is always better to go for a smartphone with Gorilla Glass for that added protection and peace of mind. | Corning Gorilla Glass, Glass Victus |
| Features |
Eye Comfort Shield Always-on display HDR10+, 1300 nits (peak) |
Camera
| Front Camera | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF |
| Camera Setup | Triple |
| Main Camera Camera is able to capture photographs and usually videos, The most important characteristics of a camera are the resolution (measured in megapixels), lens focus type (fixed or automatic), higher megapixel cameras are known to capture higher quality photos, but not always a good measurement of the photos quality. |
12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video |
| Image | 4000 x 3000 Pixels |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS |
| Camera Features | Geo-tagging, touch focus, face/smile detection, Auto HDR, panorama, |
| Flash Flash Light => There is commonly two types of flash lights are used in camera mobile phones, LED Flash (LED flash offers lower power consumption with drive circuitry that takes up very little room, LEDs can be strobed faster than any other light source), Xenon Flash (xenon flash produces an extremely intense full-spectrum white light for a very short duration) | LED flash |
Hardware
| Operating System OS => Every computer system run on a base software called Operating System (OS). Operating System controls all basic operations of the computer (such as smartphone, PDAs, tablet computers and other handheld devices). The Operating System allows the user to install and run third party applications (apps), apps are used to add new functionality to the device. | Android 11 |
| Chipset Chipset is a group of integrated circuits designed to perform one or a more dedicated functions, often with real time computing constraints, Popular smartphones are equipped with more advanced embedded chipsets that can do many different tasks depending on their programming. | Samsung Exynos 2100 |
| CPU CPU (Central Processing Unit) mostly known as processors, CPU processes instructions in order to carry out certain functions that make your device operate properly. Processors are often described as the brain of computers, smartphones and tablets, Smartphones and tablets rely on processors to carry out their every task, Processors are an incredibly important factor in selecting any type of computing device, including your smartphone. | Octa core (2.9 GHz, Single core, Cortex X1 + 2.8 GHz, Tri core, Cortex A78 + 2.2 GHz, Quad core, Cortex A55) |
| Architecture | 64 bit |
| Fabrication | 5 nm |
| GPU GPU (Graphics Processing Unit) is a single-chip processor designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display, This includes things such as lighting effects, object transformations, and 3D motion. | Mali-G78 MP14 |
| RAM (Memory) RAM (Random Access Memory) is a type of computer memory that can be accessed randomly, any byte of memory can be accessed without touching the preceding bytes that allows information to be stored and accessed quickly from random locations. RAM is the most common type of memory found in computer systems, smartphones, tablets and other electronic devices. | 8 GB |
| Internal Storage Internal Storage is a data storage space (flash memory) mostly used in smartphones, tablets and other electronic devices where operating system, apps, music, photos, videos, files and other user data Is stored. | 128/256GB Built-in, 8GB RAM, UFS 3.1 |
| Card Slot Memory Card Slot is a special slot for inserting a memory card. Memory cards allow you to expand the phone's built-in memory, A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video, for use on small, portable or remote computing devices such as mobile phones, mp3 players, digital cameras. | |
| Sensors Sensors are electronic components that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure and location, The output is generally a signal that is converted to use in computing systems, a location sensor, such as a GPS receiver is able to detect current location of your electronic device. | Accelerometer, Barometer, Compass, Fingerprint (under display, ultrasonic), Gyro, Proximity, SpO2 |
Network
| SIM TYPE SIM (Subscriber Identity Module) is a small card that contains mobile network subscriber's account information. This allows the phone using the card to attach to a mobile network. The SIM card is most commonly associated with GSM and UMTS mobile networks. Moving a SIM card from one phone to another allows a subscriber to switch mobile phones without having to contact their mobile network carrier. SIM cards can also be used by a phone to store limited amounts of data, such as phone numbers and text messages. | Nano SIM |
| SIM Technology | Dual Sim, Dual Standby, eSIM (Nano-SIM) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100) |
| 5G Network | 5G SA/NSA |
Multimedia
| FM Radio | |
| Stereo Speakers | YES |
| Loudspeaker | YES |
| Audio Jack | NO |
| Audio Features |
32-bit/384kHz audio Tuned by AKG |
Connectivity
| Wi-fi Wi-Fi is a popular wireless networking technology using radio waves to provide high-speed network connections that allows devices to communicate without cords or cables, Wi-Fi is increasingly becoming the preferred mode of internet connectivity all over the world. | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band |
| Bluetooth Bluetooth is a wireless communications technology for exchanging data between mobile phones, headsets, computers and other network devices over short distances without wires, Bluetooth technology was primarily designed to support simple wireless networking of personal consumer devices. | v5.0 with A2DP, LE |
| GPS GPS The Global Positioning System is a satellite-based radio navigation system, GPS permits users to determine their position, velocity and the time 24 hours a day, in all weather, anywhere in the world, In order to locate your position, your device or GPS receiver must have a clear view of the sky. | Yes + A-GPS support & Glonass, BDS, GALILEO |
| USB | USB Type-C 3.2, USB On-The-Go |
| EDGE EDGE (Enhanced Data GSM Environment) is a wireless network technology generally considered the next step in the 2G network offers data transfer rates up to four times faster than ordinary GSM networks, Generally, EDGE is used for the purpose of wireless data transfer, such as sharing pictures and videos or browsing the Internet via a mobile phone connection. | |
| GPRS GPRS (General Packet Radio Service) is a packet oriented mobile data service on the 2G and 3G cellular communication system's global system for mobile communications (GSM), Generally, GPRS is used for the purpose of wireless data transfer, such as sharing pictures and videos or browsing the Internet via a mobile phone connection. | |
| Speed | 3G (HSPA 42.2/5.76 Mbps), 4G LTE-A (CA), 5G capable |
| Wi-fi Hotspot | |
| NFC NFC (Near field communication) is a set of standards for smartphones and similar devices to establish peer-to-peer radio communications with each other by touching them together or bringing them into proximity, usually no more than a few inches. |
Features
| Messaging | SMS(threaded view), MMS, Email, Push Mail, IM |
| Web Browser Web Browser => a web browser is a software application used to locate, retrieve and display content on the World Wide Web, including Web pages, images, video and other files, The primary function of a web browser is to render HTML, the code used to design or markup webpages. | HTML5 |
| Games | Built-in + Downloadable |
| Torch |
Battery
| Battery Type Battery Type => Cell phones run on various kinds of batteries depending on the manufacturer, phone size or shape and features. There are basically four types of cell phone batteries => Lithium Polymer, Lithium Ion, Nickel Metal Hydride and Nickel Cadmium. | Li-Ion (Lithium Ion) |
| Capacity Battery Capacity is a measure (typically in Amp-hr) of the charge stored by the battery, and is determined by the mass of active material contained in the battery. The battery capacity represents the maximum amount of energy that can be extracted from the battery under certain conditions. | 4000 mAh |
| Placement | Non-removable |
| Wireless Charging Wireless Charging (Inductive Charging) uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device. | Yes |
| Talk Time Talk Time is the longest time that a single battery charge will last when you are constantly talking on the phone under perfect conditions, Ambient temperature and highly dependent on the cellular network environment such as the distance to the closest cell network tower. | Up to 33 Hours(4G) |
| Extra |
25W wired, PD3.0 15W wireless (Qi/PMA) 4.5W reverse wireless |
Samsung Galaxy S21 Detailed Review
Introduction: The Samsung Galaxy S21 was launched in January 2021 as part of Samsung’s flagship S series. It introduced several improvements over its predecessor, the Galaxy S20, including a more refined design, enhanced camera capabilities, and improved performance. This review provides an in-depth look at the Galaxy S21, covering its design, display, performance, camera system, battery life, software, and more, along with a summary of its pros and cons.
Specifications at a Glance
- Display: 6.2-inch Dynamic AMOLED 2X (2400 x 1080 pixels, 421 ppi)
- Processor: Exynos 2100 (International) / Qualcomm Snapdragon 888 (USA/China)
- RAM: 8 GB
- Storage Options: 128 GB, 256 GB (no expandable storage)
- Rear Cameras: Triple camera system (12 MP ultra-wide f/2.2, 12 MP wide f/1.8, 64 MP telephoto f/2.0 with 3x hybrid zoom)
- Front Camera: 10 MP (f/2.2)
- Battery: 4000 mAh with 25W fast charging, 15W wireless charging, and reverse wireless charging
- Water and Dust Resistance: IP68 rating (up to 1.5 meters for 30 minutes)
- Operating System: Originally Android 11, upgradable to the latest Android versions
- Audio: Stereo speakers, USB Type-C port (no headphone jack)
- Dimensions: 151.7 x 71.2 x 7.9 mm
- Weight: 169 grams
Design and Build Quality
Aesthetics:
- Premium Design: The Galaxy S21 features a sleek design with an aluminum frame and a glass back, giving it a premium feel. The camera module seamlessly blends with the phone’s body, providing a distinctive look.
- Color Options: Available in a range of colors, including Phantom Gray, Phantom White, Phantom Violet, and Phantom Pink.
Durability:
- Gorilla Glass Victus: The front and back are protected by Gorilla Glass Victus, offering excellent resistance to scratches and drops.
- IP68 Rating: The S21 is rated IP68, making it resistant to dust and water, suitable for everyday use without worry.
Ergonomics:
- Comfortable Size: The 6.2-inch display provides a good balance between usability and screen size, making it easy to handle with one hand.
- In-display Fingerprint Scanner: The ultrasonic fingerprint sensor provides a secure and convenient way to unlock the device.
Overall, the Samsung Galaxy S21 offers a stylish and durable design that is both attractive and functional.
Display
Specifications:
- Size: 6.2-inch Dynamic AMOLED 2X
- Resolution: 2400 x 1080 pixels (421 ppi)
- Panel Type: AMOLED
- Refresh Rate: 120Hz for smoother scrolling
- Brightness: Up to 1300 nits peak brightness
Performance:
- Vibrant and Sharp Display: The Dynamic AMOLED 2X display delivers stunning colors, deep blacks, and sharp details, providing an immersive viewing experience for content consumption and gaming.
- Smooth Scrolling: The 120Hz refresh rate allows for smoother animations and scrolling, enhancing the overall user experience.
- HDR10+ Support: The display supports HDR10+, offering improved contrast and color accuracy when viewing compatible content.
- Color Accuracy: The display features excellent color reproduction, making it ideal for photo editing and media consumption.
In summary, the Samsung Galaxy S21’s display is one of the best in its class, providing vibrant visuals and smooth performance, making it perfect for multimedia use.
Performance
Hardware:
- Processor: Exynos 2100 (International) / Qualcomm Snapdragon 888 (USA/China)
- RAM: 8 GB
Performance Evaluation:
- High-Speed Performance: The Galaxy S21 delivers exceptional performance across all tasks, including gaming, multitasking, and heavy applications. The Snapdragon 888 and Exynos 2100 provide top-tier performance.
- Efficient Power Usage: Both processors offer improved power efficiency, ensuring that the device runs smoothly without draining the battery excessively.
- AI and Machine Learning: Enhanced AI capabilities improve various features, including camera performance and user experience.
Benchmark Scores:
- Geekbench 5: The Galaxy S21 scores around 1,000 (single-core) and 3,200 (multi-core), reflecting its status as a leading flagship smartphone.
Overall, the Samsung Galaxy S21 offers fast and reliable performance, capable of handling any task with ease.
Camera
The Galaxy S21 features a versatile triple-camera system that excels in a variety of photography and videography scenarios.
Rear Cameras:
- Primary Lens: 12 MP wide-angle lens with an f/1.8 aperture and Dual Pixel PDAF
- Ultra-Wide Lens: 12 MP ultra-wide-angle lens with an f/2.2 aperture and a 120° field of view
- Telephoto Lens: 64 MP telephoto lens with an f/2.0 aperture, capable of 3x hybrid zoom and up to 30x digital zoom
- Video Recording: 8K video recording at 24 fps, 4K video at 60 fps, Super Steady video, and Director’s View
Front Camera:
- Resolution: 10 MP with an f/2.2 aperture
- Video Recording: 4K video at 60 fps
Camera Performance:
- Daylight Photography: The S21’s camera system excels in daylight, capturing vibrant and detailed images with excellent dynamic range and color accuracy.
- Low-Light Photography: Night mode improves low-light photography, producing bright and clear images even in challenging lighting conditions.
- Versatile Shooting Options: The telephoto lens offers versatility for zooming into distant subjects, while the ultra-wide lens captures expansive scenes.
- Video Quality: The ability to record in 8K ensures that videos are sharp and detailed, while the Super Steady mode provides smooth stabilization.
In conclusion, the Samsung Galaxy S21’s camera system is a strong performer, offering excellent versatility and quality for both photos and videos, making it suitable for photography enthusiasts.
Battery Life
Specifications:
- Battery Capacity: 4000 mAh
- Charging Options: 25W fast charging, 15W wireless charging, and 4.5W reverse wireless charging
Performance:
- All-Day Battery Life: The Galaxy S21 provides solid battery life, easily lasting through a full day of moderate usage. Power users may need to charge it by the evening.
- Efficient Power Management: The Exynos 2100 and Snapdragon 888’s energy-efficient designs, combined with software optimizations, ensure effective battery management.
- Fast Charging: With 25W wired charging, the Galaxy S21 can reach 50% charge in about 30 minutes, making it convenient for quick top-ups.
- Wireless Charging: The inclusion of wireless charging adds convenience, although it’s slower than wired options.
In summary, the Samsung Galaxy S21 offers dependable battery life, making it suitable for daily use without frequent recharging.
Software
Operating System:
- Original OS: Android 11 with One UI 3.1
- Upgradability: The Galaxy S21 is eligible for updates to the latest Android versions, ensuring long-term software support and security updates.
User Experience:
- One UI Features: Samsung’s One UI offers a user-friendly experience with a range of customization options, making it easy to personalize the interface.
- Performance Over Time: The Galaxy S21’s powerful hardware ensures it continues to perform well even with new software updates.
- App Compatibility: The device supports all apps on the Google Play Store, including those that utilize the latest features and capabilities.
Software Features:
- Samsung DeX: Allows users to connect their device to a monitor for a desktop-like experience.
- Bixby: Samsung’s virtual assistant offers voice commands and smart home integration.
- Security Features: Knox security platform ensures device protection and data privacy.
Future-Proofing:
- Software Support: The Galaxy S21 will continue to receive Android updates for several years, ensuring it remains functional and secure.
In summary, the Samsung Galaxy S21 provides a robust software experience with the benefits of Samsung’s ecosystem, making it a solid investment for the long term.
Pros & Cons
Pros:
- Outstanding Performance: The Snapdragon 888 and Exynos 2100 deliver fast and efficient performance for all tasks, including gaming and multitasking.
- Excellent Camera System: The versatile triple-camera setup offers impressive photo and video quality across various lighting conditions.
- Vibrant Display: The Dynamic AMOLED 2X display provides stunning visuals with a high refresh rate for smooth interaction.
- All-Day Battery Life: The 4000 mAh battery supports efficient usage, easily lasting through a day of moderate use.
- Premium Design: The stylish design and durable build quality enhance the overall user experience.
Cons:
- No Expandable Storage: The lack of a microSD card slot limits storage expansion options.
- Average Battery Capacity: While adequate for most users, some may find the 4000 mAh battery insufficient for heavy usage days.
- No Headphone Jack: The absence of a 3.5mm headphone jack may be a drawback for some users.
- Price: The Galaxy S21 is positioned at a premium price point, making it a significant investment.
Conclusion
The Samsung Galaxy S21 is a compelling flagship smartphone that offers a balance of performance, camera quality, and display excellence. While it may come with some limitations, its strengths make it an excellent choice for anyone looking for a high-end device. With a stylish design, powerful internals, and a feature-rich software experience, the Galaxy S21 is well-suited for both casual and power users alike.
Review
Disclaimer Note
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