Galaxy S25 • Unlocked vs iPhone 15 • Locked AT&T

The Samsung Galaxy S25, an Android smartphone, was released in February 2025, succeeding the Galaxy S24 series. The iPhone 15, an iOS smartphone, launched in September 2023, following the iPhone 14. These devices represent distinct approaches to mobile technology, with the Galaxy S25 emphasizing a high refresh rate display and extended software support within the Android ecosystem, while the iPhone 15 focuses on a refined user experience, a capable camera system, and a durable design within Apple's integrated platform.

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

• Release and Software Support: The Galaxy S25, released in February 2025, benefits from a commitment of seven years of operating system and security updates, with support projected to continue until at least 2032. It launched with Android 15 and Samsung's One UI 7. The iPhone 15, released in September 2023, shipped with iOS 17 and is compatible with subsequent iOS versions, including iOS 18 and iOS 26. Apple typically provides major iOS updates for five to six years from a device's release.
• Durability and Battery Longevity: Both smartphones feature robust builds. The Galaxy S25 incorporates Gorilla Glass Victus 2 on both its front and rear, encased in an aluminum frame. The iPhone 15 features a Ceramic Shield front, a color-infused glass back, and an aluminum design. Both devices carry an IP68 rating for dust and water resistance, indicating they can withstand submersion in up to 6 meters of water for 30 minutes. Apple has also indicated that the iPhone 15's battery is designed to retain 80% of its original capacity after 1,000 complete charge cycles, an improvement over previous models.
• Practical Lifespan: The Galaxy S25's extended software support offers a longer guaranteed period for receiving the latest Android features and security patches. The iPhone 15, while having a slightly shorter typical software support window, benefits from Apple's strong ecosystem and the improved battery longevity, which can contribute to a longer practical lifespan for many users.

The performance of a smartphone is crucial for daily tasks, from launching applications to managing multiple processes simultaneously.

• Processing Power: The Galaxy S25 is powered by a customized Snapdragon 8 Elite for Galaxy processor, built on a 3nm manufacturing process with an octa-core CPU. This processor is designed to handle demanding applications and multitasking smoothly, with some benchmarks indicating strong performance. The iPhone 15 features Apple's A16 Bionic chip, built on a 4nm architecture with a hexa-core CPU. This chip provides consistent performance and smooth graphics for high-performance games.
• Memory and Storage: The base model of the Galaxy S25 comes with 12GB of RAM, with some higher-tier S25 Ultra models offering up to 16GB of RAM and 1TB of storage. Storage options for the standard S25 include 128GB and 256GB. The iPhone 15 is equipped with 6GB of RAM and offers storage configurations of 128GB, 256GB, and 512GB. The higher RAM in the Galaxy S25 may offer a slight advantage in managing a large number of open applications simultaneously.
• Battery Performance: The Galaxy S25 is equipped with a 4000mAh battery, providing up to 29 hours of video playback and generally lasting a full day with mixed usage. The iPhone 15 has a 3349 mAh battery, offering up to 20 hours of video playback. In independent web browsing tests, the iPhone 15 lasted approximately 11 hours and 5 minutes. Both devices aim to provide sufficient power for typical daily use, though heavy users may experience variations.

The display is a primary interface for smartphone interaction, and both devices offer distinct visual experiences.

• Display Technology and Size: The Galaxy S25 features a 6.2-inch Dynamic LTPO AMOLED 2X display. This technology, including Samsung's HOP 3.0, allows for an adaptive refresh rate. The iPhone 15 comes with a 6.1-inch Super Retina XDR OLED display. Both OLED technologies deliver deep blacks and vibrant colors.
• Resolution and Brightness: The Galaxy S25 offers a resolution of 2340x1080 pixels, resulting in approximately 416 pixels per inch (ppi). It boasts a peak brightness of up to 2600 nits, ensuring good visibility in various lighting conditions. The iPhone 15 has a resolution of 2556x1179 pixels, with a pixel density of about 460 ppi. Its display can reach a peak outdoor brightness of up to 2000 nits.
• Refresh Rate and Smoothness: A notable difference lies in the refresh rate. The Galaxy S25 features an adaptive 120Hz refresh rate, which contributes to smoother scrolling and more fluid animations. The iPhone 15 maintains a standard 60Hz refresh rate. Users who prioritize a highly fluid visual experience, especially in gaming or fast-paced content, may notice the difference offered by the higher refresh rate.

Both smartphones offer advanced camera systems designed to capture high-quality photos and videos in various scenarios.

• Rear Camera Systems: The Galaxy S25 features a triple-camera setup on its rear, consisting of a 50MP wide-angle main camera, a 12MP ultrawide camera with a 120-degree field of view, and a 10MP telephoto lens offering 3x optical zoom. Both the main and telephoto lenses include optical image stabilization (OIS). The iPhone 15 is equipped with a dual-camera system, featuring a 48MP main camera with sensor-shift OIS and a 2x telephoto capability enabled by its quad-pixel sensor, alongside a 12MP ultrawide camera with a 120-degree field of view.
• Photography Features: The Galaxy S25 focuses on image optimization, delivering crisp details and accurate color reproduction, even when zoomed. The iPhone 15 utilizes computational photography features such as Photonic Engine, Deep Fusion, Smart HDR 5, and a dedicated Night mode to enhance image quality in various lighting conditions. Both devices include a 12MP front-facing camera for selfies and video calls.
• Video Capabilities and Audio: The Galaxy S25 supports video recording at up to 8K resolution at 30 frames per second (fps) and includes a Super Steady video mode for stabilization. The iPhone 15 can record 4K Dolby Vision video at up to 60fps, offers a Cinematic mode for 4K HDR video at 30fps, and an Action mode for stabilized video at up to 2.8K at 60fps, with slow-motion capabilities up to 240fps. Both phones are expected to provide clear audio recording for videos and calls, with the iPhone 15 featuring three microphones.