The Samsung Galaxy S21 5G SM-G991U is a compact powerhouse packed with top-tier features, designed for users who want premium performance in a sleek form. Equipped with a Snapdragon 888 processor, a stunning 120Hz Dynamic AMOLED display, and a versatile triple-camera system, the SM-G991U caters to both tech enthusiasts and everyday users. Its 5G capability ensures faster download speeds and smooth streaming, while Samsung’s One UI offers a user-friendly, customizable experience. From high-end camera features to long-term software support, the Samsung Galaxy S21 5G SM-G991U stands out as a balanced, future-ready device perfect for anyone seeking quality and innovation in one package.
Specifications of the Samsung Galaxy S21 5G (SM-G991U):
| Specification | Details |
| Launch Date | January 29, 2021 |
| Dimensions | 151.7 x 71.2 x 7.9 mm |
| Weight | 169g (Sub6); 171g (mmWave) |
| Build | Gorilla Victus Glass front, a plastic back cover, and an aluminum frame |
| SIM | Nano-SIM, eSIM, or Dual SIM |
| Water Resistance | IP68 (up to 1.5m for 30 min) |
| Protection | Corning Gorilla Glass Victus |
| Operating System | Android 11 (upgradable to future Android versions), One UI 6.1 |
| Processor (Chipset) | Exynos 2100 (International); Snapdragon 888 5G (USA/China) |
| CPU | 1×2.9 GHz Cortex-X1, 3×2.80 GHz Cortex-A78, 4×2.2 GHz Cortex-A55 Octa-core (International) Cortex-A55 1×2.84 GHz Cortex-X1, 3×2.42 GHz Cortex-A78, 4×1.80 GHz (USA/China) |
| GPU | Mali-G78 MP14 (International); Adreno 660 (USA/China) |
| Internal Storage | 128GB 8GB RAM, 256GB 8GB RAM |
| Card Slot | Not available |
| Main Camera | Triple: 12 MP wide, 64 MP telephoto (3x hybrid zoom), 12 MP ultrawide; LED flash, auto-HDR, panorama |
| Video Recording | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, gyro-EIS, stereo sound recording |
| Selfie Camera | 10 MP wide with HDR; video 4K@30/60fps, 1080p@30fps |
| Sound | Stereo speakers, 32-bit/384kHz audio, no 3.5mm jack, AKG-tuned |
| Radio | FM radio (only on Snapdragon variant, region-specific) |
| Sensors | Features include an under-display ultrasonic fingerprint sensor, accelerometer, gyroscope, proximity sensor, compass, and barometer |
| Extra Features | Samsung DeX, Wireless DeX (desktop experience support) |
| Battery | 4000mAh, Li-Ion, non-removable |
| Charging | 25W wired charging, 15W wireless charging (Qi/PMA), and 4.5W reverse wireless charging |
| Color Options | Gray, White, Violet, and Pink. |
| Models | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W |
| Price | Starting at approximately $158 / €222 / £179 / ₹34,999 |
| SAR (Head/Body) | 0.74 W/kg (head), 1.08 W/kg (body); EU: 0.46 W/kg (head), 1.51 W/kg (body) |
| Performance Scores | AnTuTu: 584055; GeekBench: 3238; GFXBench: 60fps |
| Battery Life | Endurance rating of 93 hours |
Key Specifications of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U is packed with high-end specifications, making it a competitive choice. This model includes Qualcomm’s Snapdragon 888 processor, providing efficient performance. This smartlphone has a 6.2-inch Dynamic AMOLED 2X display with a 120Hz refresh rate. This display technology ensures smooth scrolling on smartphones and vivid colors. The SM-G991U is built to handle daily tasks, gaming, and multitasking without lag. It includes a reliable camera setup, a decent battery, and impressive connectivity options.
Processor and Performance of SM-G991U
The Snapdragon 888 processor powers the SM-G991U, which is known for speed and efficiency. This chip enhances gaming, app performance, and multitasking. Paired with 8GB of RAM, the SM-G991U handles apps and tasks smoothly. For users who love gaming, this processor ensures lag-free, fast gameplay. The phone also includes 128GB and 256GB storage options, perfect for storing apps, games, and media.
Display Quality in Samsung Galaxy S21 5G SM-G991U
- Dynamic AMOLED 2X Display: The 6.2-inch display is vibrant and sharp, featuring a resolution of 1080 x 2400 pixels.
- 120Hz Refresh Rate: This high refresh rate makes screen movements fluid and is perfect for gaming and browsing.
- HDR10+ Support: HDR10+ enhances colors, making streaming and videos appear realistic.
Camera Specifications
The camera setup in the SM-G991U ensures detailed photos.
- Rear Cameras: The camera setup includes a 12MP wide lens, a 12MP ultra-wide lens, and a 64MP telephoto lens.
- Front Camera: The 10MP front camera is perfect for selfies and video calls.
- Camera Features: Night Mode, Super Steady, and 8K video recording.
These features make the Samsung Galaxy S21 5G SM-G991U a versatile choice for high-quality photography and smooth performance.
Design and Build Quality of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U is designed with style and durability. This model has a refined, minimalist look that fits comfortably in the hand. Its compact 6.2-inch frame makes it easy to use one-handed. Samsung uses a mix of glass and metal, giving the SM-G991U a premium feel. With an IP68 rating, it is also water and dust-resistant, adding to its durability.
Build Materials and Quality
Samsung crafted the SM-G991U with Gorilla Glass Victus, providing strong protection against drops and scratches. The aluminum frame adds to its resilience. The back panel has a matte finish, reducing fingerprints and enhancing grip.
Color Options and Finishes
The Samsung Galaxy S21 5G SM-G991U comes in several attractive colors:
- Phantom Gray: A sleek and modern look.
- Phantom White: A refined and timeless choice.
- Phantom Pink: Adds a unique and playful vibe.
Water and Dust Resistance
With an IP68 rating, the SM-G991U can withstand minor water exposure and dust. It can survive in 1.5 meters of water for up to 30 minutes, making it suitable for everyday use without worry.
The design and build of the SM-G991U make it a reliable and stylish choice for users looking for a durable, premium smartphone.
Display Features of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U’s display stands out for its rich colors and smooth performance. The 6.2-inch Dynamic AMOLED 2X display of this smartlyphone ensures bright and clear visuals. This screen type supports a 120Hz refresh rate, enhancing the user experience. It is ideal for gamers, streamers, and those who appreciate a good screen. The SM-G991U display is also easy to view under sunlight, thanks to high brightness levels.
Dynamic AMOLED 2X Technology
This screen technology provides a wide color range and deep contrast. With HDR10+ support, movies and photos look lifelike. Dynamic AMOLED 2X also reduces eye strain, thanks to its blue light filter.
120Hz Refresh Rate
The 120Hz refresh rate ensures smooth motion across the screen. This feature is useful for scrolling, gaming, and streaming videos. It also adds to the immersive experience, making visuals more engaging.
Brightness and HDR Support
- High Brightness: The screen remains visible under direct sunlight, with peak brightness reaching 1300 nits.
- HDR10+ Compatibility: HDR10+ enhances colors, making movies and videos appear rich and vibrant.
The display quality of the Samsung Galaxy S21 5G SM-G991U enhances everyday use, making it ideal for entertainment and productivity.
Camera Performance of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U offers an impressive camera system, perfect for those who enjoy photography. This model has a triple rear camera setup, which captures clear, detailed images. The main 12MP sensor is designed for everyday photos, while the 12MP ultra-wide lens captures larger scenes. Additionally, the 64MP telephoto lens provides 3x hybrid zoom, allowing users to zoom without losing quality. The SM-G991U also features a 10MP front camera for selfies and video calls.
Main Camera Quality
The main 12MP sensor produces vibrant photos with accurate colors. In low-light settings, it performs well, thanks to its large sensor size. The Night Mode also enhances image clarity and detail in dark conditions, reducing noise.
Ultra-Wide Camera Performance
- 12MP Ultra-Wide Lens: Perfect for landscape and group photos, as it covers a wider field of view.
- Distortion Correction: The ultra-wide camera minimizes distortion, making edges appear sharp.
Telephoto Lens and Zoom
The SM-G991U’s 64MP telephoto lens enables 3x hybrid zoom and 30x digital zoom. Users can capture distant subjects without losing much detail. This feature is ideal for nature photography and event coverage.
The SM-G991U’s camera features make it a great choice for photography lovers, offering versatility and high-quality images.
Software and User Experience of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U operates on Samsung’s One UI, which is built on the Android platform. One UI is designed for smooth and easy use, especially with one-handed controls. It offers several customization options, allowing users to personalize their phone experience. Samsung’s One UI adds unique features to the SM-G991U, making it not only efficient but also enjoyable. Updates ensure the software remains current, with the SM-G991U initially running Android 11 but upgradeable to later versions.
One UI Overview
Samsung’s One UI is one of the most user-friendly interfaces available. One UI also includes useful shortcuts and the Edge Panel, which provides quick access to favorite apps. The user experience is smooth, with intuitive gestures and easy multitasking.
Customization Options and Unique Features
- Themes and Icons: Users can choose from a variety of themes and icon packs to change the look and feel of the SM-G991U.
- Samsung DeX: This feature allows users to connect their phone to a monitor and use it like a computer.
- Edge Panel: Quick access to frequently used apps, contacts, and tools.
Android Updates and Security
Samsung provides regular updates for the Galaxy S21 5G SM-G991U, ensuring it stays secure and up-to-date. These updates often bring new features and security patches, improving user experience and device protection.
The software on the SM-G991U makes it a versatile and enjoyable phone, with enough customization for every user’s preference.
5G Connectivity and Network Performance on Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U is built to support 5G, which means faster internet speeds and reliable network performance. It supports both sub-6 GHz and mmWave 5G, ensuring strong performance across most 5G networks. Users experience faster downloads, low-latency streaming, and smooth video calls, even in crowded areas. With the SM-G991U, Samsung has prepared its users for a high-speed, future-proof experience.
5G Bands Supported
The SM-G991U is compatible with both types of 5G signals:
- Sub-6 GHz 5G: Provides a more extensive network range, perfect for cities and suburban areas.
- mmWave 5G: Delivers faster speeds, especially in busy urban areas.
With these 5G bands, the SM-G991U ensures that users can take full advantage of 5G where it’s available.
Network Performance in Different Environments
- High-Speed Downloads and Streaming: With 5G, downloading large files and streaming high-definition videos is fast and efficient.
- Video Calls and Online Gaming: The low-latency connection reduces delays, making it perfect for video calls and gaming.
- Reliable Connectivity: The SM-G991U’s 5G connectivity remains stable even in crowded places, like sports events and busy city areas.
The Samsung Galaxy S21 5G SM-G991U’s network performance keeps it ready for the future of mobile connectivity.
Battery Life and Charging Options on Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U is equipped with a 4000mAh battery, which provides a full day of use on a single charge for most users. Samsung includes 25W fast charging, allowing the battery to reach a good level in less time. The phone also supports 15W wireless charging, making it convenient for users who prefer charging without cables. Another unique feature is reverse wireless charging, which allows users to share battery power with compatible devices.
Battery Life in Daily Use
The 4000mAh battery provides enough power for a day’s worth of typical activities, such as browsing, social media, and gaming. With moderate use, the SM-G991U can last a full day. However, 5G usage or intensive gaming may reduce battery life, so users may need to charge more frequently.
Fast Charging and Wireless Charging
- 25W Fast Charging: This feature lets users recharge quickly, perfect for a boost during busy days.
- 15W Wireless Charging: Users can charge their phone without cables, simply by placing it on a wireless charging pad.
Reverse Wireless Charging
The SM-G991U also features reverse wireless charging, which allows it to share power with compatible devices like earbuds or other smartphones. This feature is helpful for users on the go, providing extra power for small devices when needed.
The Samsung Galaxy S21 5G SM-G991U offers a flexible and convenient battery and charging experience.
Pros and Cons of Samsung Galaxy S21 5G SM-G991U
Every smartphone has its strengths and weaknesses. The Samsung Galaxy S21 5G SM-G991U is no different. This section covers the advantages and drawbacks of this model. These points will help users determine if the SM-G991U meets their needs.
Pros of Samsung Galaxy S21 5G SM-G991U
- Compact Design: Easy to hold and operate with one hand, thanks to its 6.2-inch screen.
- Vibrant Display: The Dynamic AMOLED 2X display with a 120Hz refresh rate offers clear and bright visuals.
- Powerful Processor: The Snapdragon 888 provides fast and smooth performance.
- Excellent Camera Setup: With three rear cameras and a 10MP front camera, photo quality is impressive.
- 5G Connectivity: Future-proofed with 5G support for fast internet speeds.
Cons of Samsung Galaxy S21 5G SM-G991U
- No Expandable Storage: The SM-G991U doesn’t support microSD cards, limiting storage options.
- Moderate Battery Capacity: While adequate for daily use, heavy users may find the 4000mAh battery needs frequent charging.
- Plastic Back Panel: Unlike some high-end models, the SM-G991U’s back is plastic, which may feel less premium.
These pros and cons provide a balanced view of the Samsung Galaxy S21 5G SM-G991U, helping buyers make an informed decision.
Performance and Gaming Experience on Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM-G991U is equipped with the Snapdragon 888 processor, making it a powerhouse for performance and gaming. This processor, combined with 8GB of RAM, provides smooth and responsive handling of high-demand tasks. Gaming on the SM-G991U is enjoyable and lag-free, even for graphics-intensive games. The 120Hz refresh rate further enhances gameplay by making movements smooth and fluid, especially in fast-paced games. For users who rely on speed and reliability, the SM-G991U offers a top-tier experience.
Snapdragon 888 Processor
The Snapdragon 888 processor is one of the most advanced chipsets available, delivering impressive speeds and efficiency. It supports intensive tasks, such as high-resolution gaming, with ease. For users who multitask, the processor handles switching between apps without lag, making it ideal for productivity.
Gaming on Samsung Galaxy S21 5G SM-G991U
- Smooth Graphics: With Adreno 660 GPU, games look clear, detailed, and visually appealing.
- 120Hz Refresh Rate: This feature reduces motion blur, making fast movements look seamless and smooth.
- Cooling Technology: Samsung included cooling technology to keep the SM-G991U from overheating during extended gaming sessions.
Multitasking and Everyday Performance
The Samsung Galaxy S21 5G SM-G991U’s 8GB of RAM ensures that multiple apps run smoothly without lag. Whether it’s streaming, gaming, or running several apps, the SM-G991U keeps everything smooth and efficient.
With these performance features, the Samsung Galaxy S21 5G SM-G991U is perfect for gaming enthusiasts and multitaskers.
Camera Features and Modes in Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM G991U’s camera system is packed with advanced features and shooting modes. This model has a triple-lens rear camera setup, including a 12MP main lens, a 12MP ultra-wide lens, and a 64MP telephoto lens. It also supports features like Night Mode, Single Take, and 8K video recording, which improve the photo and video quality. The front 10MP camera is ideal for selfies and video calls, with features like Smart Beauty and HDR.
Key Camera Modes on SM-G991U
- Single Take: This mode allows users to capture multiple photos and short videos with one click, selecting the best shots automatically.
- Night Mode: Enhances low-light photography, making it possible to capture clear, bright images even in darkness.
- Pro Mode: Offers manual control over settings like ISO, shutter speed, and focus, ideal for experienced photographers.
Video Recording Capabilities
- 8K Video: The SM G991U can record in 8K resolution, capturing every detail in ultra-high definition.
- Super Steady: This feature stabilizes the camera during video recording, reducing shakiness and providing smooth video footage.
Front Camera Features
The 10MP front camera on the SM G991U is optimized for selfies, with modes like:
- Live Focus: Blurs the background to highlight the subject.
- Smart Beauty: Smoothens skin tone and enhances facial features automatically.
These camera features make the Samsung Galaxy S21 5G SM G991U a solid choice for both casual and advanced photographers.
Security Features of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM G991U includes advanced security options to protect user data. Samsung’s Knox security platform is built into the SM G991U, ensuring that data remains safe from malware and other threats. For user convenience, the phone offers two primary biometric security methods: an ultrasonic fingerprint sensor and facial recognition. These security features give users peace of mind, knowing their data and privacy are well-protected.
Knox Security Platform
Samsung Knox is a multi-layered security platform that protects data from malware and external threats. This platform runs continuously, monitoring the phone for suspicious activities. Knox is especially useful for those handling sensitive data, ensuring the SM-G991U remains secure at all times.
Biometric Security Options
- Ultrasonic Fingerprint Sensor: Located within the display, this sensor uses ultrasonic waves, making it more secure and accurate than traditional optical sensors.
- Facial Recognition: Allows quick, hands-free unlocking by recognizing the user’s face.
Secure Folder
The SM G991U’s Secure Folder feature adds an extra layer of security by allowing users to keep specific files, photos, and apps locked separately. This feature is useful for storing personal or work-related information securely.
The Samsung Galaxy S21 5G SM G991U’s security features make it a reliable choice for users who prioritize privacy and data protection.
Software Updates and Long-Term Performance of Samsung Galaxy S21 5G SM-G991U
Samsung is committed to providing software updates for its Galaxy S21 5G SM-G991U model, ensuring users get the latest features and security enhancements. Typically, Samsung offers major Android updates for several years, alongside security patches. This commitment ensures that the SM G991U remains functional and secure for an extended period, making it a good investment for the long term.
Frequency of Updates
Samsung has promised at least three major Android updates for the Galaxy S21 series. This means the SM G991U will continue receiving new features and improvements for a minimum of three years. Regular security patches also keep the device safe from new threats.
Impact on Long-Term Performance
With regular updates, the SM G991U remains fast and responsive over time. Samsung’s One UI is optimized to run smoothly on older hardware, ensuring long-term performance without lag.
New Features and Enhancements
Each update brings new features, such as improved camera modes, security improvements, and general enhancements to One UI. This regular addition of features keeps the Samsung Galaxy S21 5G SM G991U feeling new even after years of use.
Samsung’s update policy makes the SM G991U a reliable smartphone for users looking for durability and long-term support.
Pricing and Value for Money of Samsung Galaxy S21 5G SM-G991U
The Samsung Galaxy S21 5G SM G991U offers premium features at a mid-range price point, making it a great value. When compared to similar models, the SM G991U provides excellent performance, high-end camera quality, and a compact design. While not the cheapest option, its advanced features and Samsung’s commitment to updates add long-term value.
Comparing Prices to Features
The SM G991U is priced competitively within the premium segment. Given its 5G capability, Snapdragon 888 processor, and high-quality display, it offers significant value compared to similarly priced phones.
Is the Samsung Galaxy S21 5G SM-G991U Worth It?
For users who value performance, camera quality, and 5G connectivity, the SM G991U is an excellent choice. Its combination of powerful hardware and premium build makes it worth the investment.
Additional Factors to Consider
- Resale Value: Samsung devices generally hold their value well, adding to the SM G991U’s overall worth.
- Durability: With its IP68 rating and Gorilla Glass Victus, the SM G991U is built to last.
The Samsung Galaxy S21 5G SM G991U provides good value for money for users looking for a mid-range device with premium features.
Conclusion
The Samsung Galaxy S21 5G SM-G991U is a well-rounded smartphone that balances performance, camera quality, and connectivity. With its powerful Snapdragon 888 processor, vibrant 120Hz AMOLED display, and advanced triple-camera setup, the SM G991U is built for users seeking a fast, reliable device. The addition of 5G connectivity, Samsung’s Knox security, and regular software updates further enhance its long-term appeal. While the lack of expandable storage may be a drawback for some, the phone’s premium features and compact design offer great value. Overall, the Samsung Galaxy S21 5G SM G991U stands out as a smart investment for those wanting high-end functionality and durability in a mid-range device.
FAQs about the Samsung Galaxy S21 5G SM-G991U
1. Does the Samsung Galaxy S21 5G SM-G991U have expandable storage?
No, the Samsung Galaxy S21 5G SM-G991U does not support expandable storage via a microSD card.
2. What operating system does the Samsung Galaxy S21 5G SM-G991U run?
It runs on Android 11 with Samsung’s One UI, and it is eligible for up to four major Android upgrades.
3. Is the Samsung Galaxy S21 5G SM-G991U water-resistant?
Yes, it has an IP68 rating, making it water and dust resistant up to 1.5 meters for 30 minutes.
4. What type of charging does the Samsung Galaxy S21 5G SM-G991U support?
It supports 25W wired charging, 15W wireless charging, and 4.5W reverse wireless charging.
5. What is the battery capacity of the Samsung Galaxy S21 5G SM-G991U?
The battery capacity is 4000mAh, providing all-day usage under typical conditions.
6. Does the Samsung Galaxy S21 5G SM-G991U have a headphone jack?
No, the Samsung Galaxy S21 5G SM-G991U does not have a 3.5mm headphone jack.
7. What colors are available for the Samsung Galaxy S21 5G SM-G991U?
The Samsung Galaxy S21 5G SM-G991U is available in Phantom Gray, Phantom White, Phantom Violet, and Phantom Pink.
8. What camera features does the Samsung Galaxy S21 5G SM-G991U offer?
It features a triple-camera setup, including a 64MP telephoto lens with 3x hybrid zoom, 12MP wide lens, and 12MP ultrawide lens, along with 8K video recording capabilities.
