The Samsung Galaxy S9 and its Plus version represent the pinnacle of high-end smartphones, offering a suite of technological innovations, refined design, and a cutting-edge user experience. This comprehensive review provides all the details on features, technical specifications, price , functionalities, camera, design, battery life, connectivity, and more, along with a thorough analysis of the advantages and limitations based on leading expert reviews and technical documentation.
Premium design and high-quality finishes
Samsung maintains the design lines that are consistent with its predecessor in the Galaxy S9 and S9+, perfecting details such as the metal structure, curved edges, and the virtually frameless front. Its dimensions and weight – 147,7 x 68,7 x 8,5 mm and 163 g for the standard model, and 158,1 x 73,8 x 8,5 mm and 189 g for the Plus – offer a robust and comfortable feel in the hand. Both models incorporate a Gorilla Glass 5 back that resists scratches and provides a premium finish, while the metal frame enhances the elegance of the whole, ensuring a feeling of durability and sophistication.
The fingerprint reader, now located just below the camera (instead of on the side), is much more accessible and ergonomic, responding to the suggestions of users of previous generations. The design is attractive, functional, and contemporary, with small details that make a difference, such as the curved edges, the integration of the slightly larger power button, and the subtle frame around the rear camera.
The color options include Midnight Black, Coral Blue, and Purple Lilac , each tailored to different tastes and personal styles. The Galaxy S9+ also features the distinctive DUOS designation in some markets for its dual SIM capability.
Durability is guaranteed with IP68 certification , meaning it can withstand immersion in water up to 1,5 meters for 30 minutes, as well as dust protection. These features make the Samsung Galaxy S9 a reliable choice for everyday use, even in demanding environments.
More details in the Galaxy S9 spec sheet
Infinity Display: Unprecedented Visual Quality
One of the Galaxy S9's main attractions is its Infinity Display Super AMOLED screen , which blends minimal bezels with a curved edge to maximize the viewing experience. The base model offers a 5,8-inch diagonal screen with Quad HD+ resolution of 2960 x 1440 pixels and a pixel density of 529 ppi, while the S9+ boasts a 6,2-inch screen with 570 ppi. In both cases, the aspect ratio is 18,5:9, which enhances multimedia playback, gaming , and multitasking with superior contrast and sharpness.
Advanced technologies enable bright, high-fidelity color display with excellent viewing angles. Thanks to adaptive contrast , readability is maintained even in direct sunlight. Users can choose from different color modes: Adaptive Display, Cine AMOLED (DCI-P3 color space), Photo AMOLED (Adobe RGB calibration), and Basic (sRGB standard), offering a personalized viewing experience.
The screen also features the Always On Display system, allowing you to check notifications and the time without unlocking your phone. It also features blue light protection, resolution adjustments, and customization options to provide the best possible experience for each user.
Learn more about the display in the Galaxy S9 spec sheet.
Power and performance: leading hardware in the premium segment
The Samsung Galaxy S9 is powered by the Samsung Exynos 9810 processor (or Snapdragon 845 in some markets), built on a 10nm process and 64-bit architecture. It features eight cores (four at 2,9 GHz and four at 1,9 GHz) that provide a perfect balance between energy efficiency and processing power.
The Galaxy S9 features 4GB of RAM , while the S9+ boasts 6GB , ensuring smooth multitasking and excellent performance for running even the most demanding apps and games. Both models offer internal storage options of 64GB, 128GB, and 256GB, expandable up to an additional 400GB via microSD cards, allowing users to store large amounts of multimedia content, documents, and applications.
The device's performance is backed by outstanding results in benchmarks such as AnTuTu, GeekBench, and 3DMark, placing it at the top of the smartphone market. Its thermal management system maintains optimal temperatures even during extended gaming or video playback sessions, preventing overheating.
Operating System and User Experience: Advanced Android Integration and Samsung Experience
Both the Galaxy S9 and S9+ come with Android 8.0 Oreo pre-installed, customized with Samsung's Experience 9.0 skin, providing an intuitive interface, advanced customization options, and a wide range of Samsung-specific features.
- Edge Screen: Quick access to apps and tools by sliding the side edge.
- Always On Display: quick information query without unlocking.
- Multitasking functions: split screen, floating windows, and simultaneous access to multiple apps.
- Samsung Knox: security suite to protect data and privacy.
- Optimization tools: battery management, RAM, storage and performance.
- BixbyVision: A visual assistant based on artificial intelligence, capable of translating texts in real time, identifying objects, places of interest, or counting calories in food.
- AR Emojis: allows you to create personalized animated avatars using facial recognition and share them on messaging apps.
Learn what's new in Samsung Experience for Galaxy S9
The system allows for advanced management of permissions and settings, as well as the uninstallation of most preinstalled apps. Bixby, while still able to improve its language capabilities, introduces features not found in other assistants, such as gamification and advanced object recognition.
Complete guide to the operating system and advanced features
Camera Reimagined: Innovation in Mobile Photography and Video
The camera is one of the standout features of the Galaxy S9 and S9+. Both incorporate an impressive 12MP Super Speed Dual Pixel sensor on the back, with a variable aperture of f/1.5-2.4, optical image stabilization (OIS), and fast autofocus, resulting in bright , sharp, and high-quality images in almost any lighting condition. The variable aperture system automatically adjusts the amount of light entering the sensor, mimicking the human eye, thus achieving superior photos both day and night.
Among the advanced features we find:
- Super Low Light Camera: optimizes light capture in dark environments, reducing noise and obtaining clear, grain-free images.
- Super Slow Motion: video recording in super slow motion at 960 fps, with automatic motion detection and the option to add music to clips or export them as animated GIFs.
- AR Emojis: generates personalized 3D avatars capable of imitating facial expressions and gestures, to share on social networks and messaging.
- BixbyVision: translates texts, recognizes foods, places and objects directly from the camera.
- Pro mode: Manual controls for ISO, shutter speed, white balance, focus and aperture.
- Auto HDR: adjusts exposure and dynamic range in high contrast situations.
- Panoramic and selective focus mode: allows you to create blurred bokeh backgrounds and capture wide-ranging landscapes.
As for the S9+ model, it incorporates a dual rear camera with an additional 12 MP telephoto lens and f/2.4 aperture, enabling optical zoom and the famous portrait effect with more precise and natural background blur.
The front camera is 8 MP with an f/1.7 aperture , ideal for bright selfies, with autofocus and portrait mode, beauty tools and HDR.
The video recording system supports resolutions up to 4K at 60 fps, with advanced stabilization for shake-free video and professional results even in dynamic environments.
Sound: Stereo speakers and Dolby Atmos technology
The sound experience reaches a new level with stereo speakers tuned by AKG , delivering powerful, clear, and nuanced audio quality for both calls and multimedia playback. The addition of Dolby Atmos technology allows you to enjoy 360-degree surround sound , optimizing the experience when watching movies, playing games, or listening to music.
The device includes 3,5mm mini-jack connectivity, maintaining compatibility with traditional headphones, and offering significant improvements in sound quality with both internal and external speakers. The volume is loud and clear, avoiding distortion even at maximum volume. The use of AKG headphones, included in the package, further enhances the listening experience, providing comfort and excellent fidelity.
Autonomy and energy efficiency
Regarding the battery, the Galaxy S9 has a 3.000 mAh capacity and the S9+ has a 3.500 mAh capacity . Both models support fast wired and wireless charging (compatible with QC 2.0, WPC, and PMA). The intelligent power management system adapts power consumption to daily needs, optimizing battery life based on app usage, screen brightness, and syncing.
In typical usage tests, the S9 lasts a full day with medium-intensive use, including browsing, multimedia, and camera work, and can last up to a day and a half with moderate use. Optimization tools allow you to free up memory, manage background apps, and activate various power-saving modes, adapting to different user profiles. Battery life may vary depending on the screen resolution selected and whether Always On Display mode is enabled or disabled.
Biometric authentication and data security
Security is one of the pillars of the Galaxy S9. It offers three biometric unlocking methods :
- Fingerprint reader rear, fast and reliable.
- Iris scanner for precise eye recognition.
- facial recognition high speed, optimized even for low light conditions.
Intelligent Scan technology combines facial and iris recognition, improving speed and security when accessing the device. The Samsung Knox 3.1 system provides an extra layer of protection, isolating sensitive information and ensuring the privacy of personal and corporate data.
The phone supports patterns, PINs, and passwords, as well as remote locking via your Samsung account, data wipe, and location tracking in case of loss or theft.
DeX Pad and Desktop Experience: Your Mobile as a Productivity Hub
The Samsung DeX Pad is a major innovation in productivity. This dock allows you to connect the Galaxy S9 to an external monitor, keyboard, and mouse, transforming your phone into a true desktop workstation with a PC-like interface. The output resolution can reach WQHD, enabling you to edit documents, browse the web, use desktop apps, manage files, or enjoy large-format multimedia content without needing a separate laptop.
The DeX Pad expands the device's versatility and enables professionals and power users to always carry their complete digital environment with them, and can also be used for gaming, presentations, and image and video editing.
Productivity improvements with DeX
Advanced connectivity and multimedia
The Samsung Galaxy S9 offers exceptional connectivity, including:
- LTE Cat.18 with ultra-fast downloads and 4G+ support.
- 802.11 WiFi a / b / g / n / ac (2.4/5 GHz) with MIMO and MU-MIMO for greater speed and coverage.
- Bluetooth 5.0 generation.
- ANT + for sports sensors, NFC for mobile payments (Samsung Pay, Google Pay).
- USB type C connectors, 3,5 mm minijack and dual SIM or SIM + microSD slot.
- GPS, Galileo, Glonass and BeiDou for fast and accurate global positioning.
Support for multi-device networks and services enables efficient file transfers, Wi-Fi hotspots, network printing, and more. Additionally, the Galaxy S9 supports most audio and video formats, making it a true multimedia hub.
Health monitoring, sensors and additional functions
The Galaxy S9 is equipped with advanced health monitoring sensors, including a heart rate monitor, blood oxygen level (SpO2), accelerometer, barometer, gyroscope, ambient light sensor, proximity sensor, and geomagnetic sensor, among others. These capabilities enable the use of fitness and wellness apps, offering detailed reports on activity, heart rate, and other physical parameters.
Features to monitor health and wellness
Versions, colors and official price
The Galaxy S9 and S9+ are available in different storage versions (64, 128 and 256 GB) and in colors such as Midnight Black, Coral Blue, Purple Lilac and Titanium Gray (depending on the market), all with high-quality finishes that reflect the elegance of Samsung's high-end range.
In terms of price, the Samsung Galaxy S9 has a recommended launch price of €849 , while the S9+ starts at €949 . It's available globally and can be found in both physical stores and online retailers, with financing options and special offers available at select retailers. It's important to compare prices and check for current promotions across different sales channels.
Detailed specs of the Samsung Galaxy S9 and S9+
| Screen | 5.8″ Super AMOLED QHD+ (2960x1440p) Curved, 529 ppi (S9) 6.2″ Super AMOLED QHD+ (2960x1440p), 570 ppi (S9+) |
|---|---|
| Processor | Exynos 9810 Octa-core 10nm 64-bit (or Snapdragon 845 depending on the market) |
| RAM | 4 GB (S9) / 6 GB (S9+) |
| Storage | 64/128/256 GB + microSD up to 400 GB |
| Rear camera | S9: 12 MP, Dual Pixel, variable aperture f/1.5-2.4, OIS, Super Slow Motion 960 fps S9+: Dual 12 MP camera (main f/1.5-2.4, secondary telephoto f/2.4) |
| Frontal camera | 8 MP, f/1.7, autofocus, HDR, portrait mode |
| Battery | 3.000 mAh (S9) / 3.500 mAh (S9+), fast and wireless charging |
| Operating System | Android 8.0 Oreo, Samsung Experience 9.0 |
| Connectivity | LTE Cat.18, WiFi ac, Bluetooth 5.0, NFC, ANT+, USB-C, 3,5 mm minijack, GPS, Galileo, Glonass, BeiDou |
| Resistance | IP68 certified (water and dust) |
| Security | Fingerprint reader, iris scanner, facial recognition, Intelligent Scan, Samsung Knox 3.1 |
| Audio | AKG stereo speakers, Dolby Atmos, FM radio, support MP3/FLAC/AAC/OGG/AP3, etc. |
| Sensors | Accelerometer, Gyroscope, Barometer, HR, SpO2, Geomagnetic, RGB Light, Pressure, Proximity, Hall |
| Extras | Samsung DeX, AR Emojis, Bixby Vision, dual SIM (depending on model), Always On Display |
| Colours | Midnight Black, Coral Blue, Purple Lilac, Titanium Gray |
| Launch price | From 849 euros (S9) and 949 euros (S9+) |
Additional details and exclusive features
The Samsung Galaxy S9 includes other features that give it enormous versatility:
- Dual SIM support in some versions, ideal for travel and work.
- Always On Display, customizable with widgets and notifications.
- gaming mode optimized, with Game Launcher to block notifications during gaming sessions and take advantage of the graphic potential of the Mali-G72 MP18 processor.
- Reversible charging stand to charge other compatible devices via cable.
- FM radio support in selected regions.
The Galaxy S9+ is positioned as one of the best exponents in mobile photography, performance, and multimedia, although the evolution compared to its predecessor, the S8, is incremental rather than revolutionary, perfecting an already excellent ecosystem.
Comparisons, expert opinions and user experience
The Samsung Galaxy S9 and S9+ have received positive reviews from most specialized media outlets. Their strong points include screen quality, ergonomic design, advanced camera, stereo sound, and user experience, while areas for improvement focus on battery life (which doesn't outperform rivals with larger batteries) and the relevance of Bixby compared to other voice assistants.
It's worth noting that the hardware-software optimization allows for a fluid experience, both in everyday use and during intensive tasks. The phone is robust, elegant, and designed to meet the needs of both demanding users and those looking for a reliable, secure, and versatile device.
The integration of features like DeX, Edge display customization, and low-light photography capabilities position the Galaxy S9 as a standout option for those looking for a device that combines portability, power, and creativity for everyday and professional use.
The Samsung Galaxy S9 and its S9+ variant set a benchmark in the premium smartphone segment: they combine a timeless and durable design with cutting-edge display, camera, and audio technology, outstanding performance, and a highly customizable user experience. Their focus on computational photography, biometric security, and productivity make them an ideal choice for users seeking a balance of innovation, reliability, and versatility, consolidating their position as a benchmark among high-end Android devices.
