Galaxy S21+ 5G vs Google Pixel 9

The longevity of a smartphone is influenced by its release date and the manufacturer's commitment to software updates, which includes operating system upgrades and security patches.

• Release Timeline: The Galaxy S21 Plus 5G was released in January 2021, making it an older device compared to the Google Pixel 9, which launched in August 2024. This age difference directly impacts their remaining support lifespans.
• Software Support: The Galaxy S21 Plus 5G typically received four major Android OS updates and five years of security updates, meaning its official security support concluded around January 2026. In contrast, the Google Pixel 9 is guaranteed seven years of OS and security updates, extending its support until at least August 2031. [16, 19, 27, 32]
• Practical Lifespan: Users seeking the longest possible software support and access to the latest Android features will find the Pixel 9 to be a more future-proof option. For those considering a refurbished device, the Pixel 9 offers a significantly longer period of guaranteed updates, ensuring continued security and compatibility with new applications.

Performance in smartphones is about how smoothly the device handles daily tasks, from browsing and app usage to more demanding activities like gaming and video editing.

• Everyday Responsiveness: The Galaxy S21 Plus 5G, with its processor from 2021, delivers smooth performance for general use and multitasking. Users report that it remains snappy and efficient for everyday applications. [43, 44] The Pixel 9, featuring a newer generation processor, offers enhanced speed and efficiency, resulting in a highly responsive user experience, even with animations and demanding applications. [6, 9, 26]
• Multitasking and Storage: The Galaxy S21 Plus 5G comes with 8GB of RAM and storage options of 128GB or 256GB. [2, 3] The Pixel 9 steps up with 12GB of RAM and similar storage configurations (128GB or 256GB), [1, 30, 31, 36] providing more headroom for extensive multitasking and ensuring applications remain active in the background for longer.
• Demanding Applications: While the Galaxy S21 Plus 5G can handle high-end games, some users have noted it can experience warmth under heavy load. [43, 45] The Pixel 9's newer processor is designed for improved thermal management, leading to more consistent performance during intensive tasks and gaming without significant overheating concerns. [26]

The display is a primary interface for smartphone interaction, and both devices offer high-quality viewing experiences with distinct characteristics.

• Display Technology and Clarity: The Galaxy S21 Plus 5G features a 6.7-inch Dynamic AMOLED 2X display with a resolution of 1080 x 2400 pixels. [2, 3, 12] The Pixel 9 has a slightly smaller 6.3-inch Actua OLED display with a resolution of 1080 x 2424 pixels. [8, 21, 36, 38] Both offer sharp visuals and vibrant colors, typical of OLED technology, with deep blacks and excellent contrast.
• Brightness and Outdoor Visibility: The Galaxy S21 Plus 5G can reach a peak brightness of 1300 nits, providing good visibility in various lighting conditions. [37] The Pixel 9 significantly improves on this, boasting a full-screen brightness of 1800 nits and peak brightness up to 2700 nits, making it exceptionally legible even in direct sunlight. [8, 26, 35, 38]
• Refresh Rate and Smoothness: Both devices feature an adaptive 120Hz refresh rate, which contributes to smooth scrolling and fluid animations. [3, 12, 21, 26, 37] This high refresh rate enhances the overall user experience, making interactions feel more immediate and responsive.

Camera capabilities are a significant factor for many users, and both the Galaxy S21 Plus 5G and Pixel 9 offer strong photographic performance with different strengths.

• Rear Camera Systems: The Galaxy S21 Plus 5G features a versatile triple-camera setup, including a 12MP wide, a 64MP telephoto with 3x hybrid zoom, and a 12MP ultrawide lens. [3, 4] It is capable of 8K video recording. [17, 33] The Pixel 9 opts for a dual-camera system, comprising a 50MP wide-angle and a 48MP ultrawide camera. [13, 14, 29] It records 4K video at up to 60fps. [11, 36]
• Photography Performance: The Galaxy S21 Plus 5G is known for producing vibrant and detailed images with impressive dynamic range, and its telephoto lens offers optical zoom capabilities. [17, 33, 42] The Pixel 9 excels in computational photography, delivering generally great photo quality, especially in everyday scenarios and with its superb selfies. [9, 11, 13, 14, 15, 18] While the base Pixel 9 lacks a dedicated telephoto lens, relying on digital zoom, its main and ultrawide sensors perform admirably, even in low light. [11, 24, 29]
• Video and Audio: Both phones offer strong video recording capabilities. The Galaxy S21 Plus 5G's 8K video is a notable feature, while the Pixel 9 provides excellent 4K video quality. [11, 17, 33, 36] For audio, the Pixel 9's microphone quality is noted for clear recordings. [38]

Beyond core specifications, several practical elements contribute to the overall user experience and device utility.

• Connectivity and Ports: Both devices support 5G connectivity, ensuring access to the latest mobile network speeds. [2, 23, 37] The Galaxy S21 Plus 5G supports Wi-Fi 6E and Bluetooth 5.2, [2] while the Pixel 9 is expected to feature newer Wi-Fi standards and Bluetooth versions, offering potentially faster and more stable wireless connections. Both utilize a USB-C port for charging and data transfer and lack a traditional 3.5mm headphone jack. [3, 13]
• Biometric Security: The Galaxy S21 Plus 5G features an ultrasonic in-display fingerprint sensor and face recognition for secure unlocking. [12] The Pixel 9 also includes an under-display ultrasonic fingerprint sensor, which users report as faster and more accurate than previous Pixel generations, alongside Face Unlock. [7, 32]
• Design and Handling: The Galaxy S21 Plus 5G has dimensions of 161.5 x 75.6 x 7.8 mm and weighs 200g, featuring a glass front and back with an aluminum frame and IP68 dust/water resistance. [2, 3, 25, 37] The Pixel 9 is generally described as having a refined design, with a comfortable in-hand feel and a matte finish on the sides. [15, 24, 26]