Galaxy S9 • Unlocked vs iPhone 8 Plus • Unlocked

The Samsung Galaxy S9, released in March 2018, and the iPhone 8 Plus, launched in September 2017, represent flagship smartphones from their respective manufacturers. While both devices offer a premium experience, they cater to different preferences through their distinct operating systems and hardware philosophies. The Galaxy S9 runs on Android, emphasizing display technology and camera versatility, whereas the iPhone 8 Plus operates on iOS, focusing on a streamlined user experience and consistent performance.

When considering the long-term usability of these devices, their release timelines and software support are key factors.

• Software Longevity: The iPhone 8 Plus, despite being released slightly earlier, has received software updates for a longer duration, supporting iOS versions up to 16.7.15 as of March 2026. In contrast, the Galaxy S9's official Android updates concluded with Android 10 in late 2020, with security updates ending in March 2022. This difference means the iPhone 8 Plus benefits from more recent security patches and feature enhancements.
• Physical Durability: Both phones feature a glass front and back with an aluminum frame, offering a similar level of material quality. The Galaxy S9 carries an IP68 rating for dust and water resistance, indicating it can withstand submersion in deeper water for longer periods compared to the iPhone 8 Plus's IP67 rating.
• Practical Lifespan: Users prioritizing the latest software features and security updates will find the iPhone 8 Plus offers a longer supported lifespan. For those comfortable with an older operating system or willing to explore unofficial software options, the Galaxy S9 remains a capable device.

The performance of a smartphone impacts daily tasks, from app usage to multitasking and gaming.

• Everyday Responsiveness: The iPhone 8 Plus, with its efficient system architecture, provides a consistently smooth experience for general navigation, app launching, and light gaming. Users often report that it handles common applications and multitasking without significant slowdowns, even several years after its release. The Galaxy S9 also offers capable performance for daily use, with its processing power handling most applications effectively.
• Multitasking and Storage: The Galaxy S9 typically comes with 4GB of RAM, which can offer a slight advantage in keeping more applications open in the background compared to the iPhone 8 Plus's 3GB of RAM. Both devices were available with various storage options, including 64GB and 256GB, providing ample space for apps and media.
• Battery Behavior: The iPhone 8 Plus generally offers robust battery life, with many users reporting it can last through a full day of typical use, and sometimes even longer. The Galaxy S9, while featuring a slightly larger battery capacity, has been noted by some users to require a midday charge for heavy usage, though it supports fast charging to mitigate this.

The display is a primary interface for any smartphone, influencing everything from media consumption to daily interactions.

• Display Technology and Clarity: The Galaxy S9 features a 5.8-inch Super AMOLED display with a resolution of 1440x2960 pixels, resulting in sharp images and text. This technology is known for producing deep blacks and vibrant colors. The iPhone 8 Plus, on the other hand, uses a 5.5-inch IPS LCD panel with a 1080x1920 pixel resolution, offering accurate color reproduction and good viewing angles.
• Brightness and Outdoor Visibility: Both displays offer sufficient brightness for comfortable indoor viewing. For outdoor use, the Galaxy S9's Super AMOLED panel often provides strong visibility due to its inherent contrast. The iPhone 8 Plus's Retina HD display with True Tone technology adjusts the screen's white balance to match ambient light, which can enhance viewing comfort in various lighting conditions.
• Viewing Experience: The Galaxy S9's slightly larger and curved display, combined with its higher resolution, offers an immersive viewing experience, particularly for videos and detailed content. The iPhone 8 Plus provides a clear and consistent visual experience, though its traditional LCD technology and lower resolution compared to the S9 mean it doesn't offer the same level of contrast or pixel density.

Both smartphones were considered strong contenders in mobile photography at their release, each with distinct camera strengths.

• Rear Camera System: The Galaxy S9 features a single 12-megapixel main camera with a unique variable aperture (f/1.5 to f/2.4), allowing it to adapt to different lighting conditions, excelling in low-light scenarios. The iPhone 8 Plus sports a dual 12-megapixel camera system, comprising a wide-angle lens (f/1.8) and a telephoto lens (f/2.8), which enables optical zoom and Portrait Mode with depth effects.
• Photography Performance: The Galaxy S9 is praised for its ability to capture bright and detailed photos in challenging low-light environments due to its variable aperture. The iPhone 8 Plus delivers consistently reliable photos in various conditions, with its dual-camera setup providing versatility for zoomed shots and artistic portraits.
• Video Recording and Audio: Both devices are capable of recording 4K video at up to 60 frames per second, offering high-quality video capture. For audio, the Galaxy S9 includes stereo speakers that provide a rich sound experience, and it retains a 3.5mm headphone jack. The iPhone 8 Plus also offers good speaker output for media consumption.