Samsung Galaxy A51 Review

How fast is the A51 in real-world use and benchmarks?

Synthetic and crowd-sourced benchmarks place the A51 in the lower midrange for graphics: UL Solutions reports a 3DMark Wild Life median score of 812 and Wild Life Unlimited 813, with Graphics test 1 running at about 4 FPS and a stability of 95%. NanoReview’s performance and gaming sub-scores (23 and 19 out of 100) align with editorial observations that the Exynos 9611 is not a high-performance chip.

Editorial reviews echoed those numbers: multiple sources described the phone as feeling slower than competing midrange devices and noted that heavier games and demanding apps expose the chipset’s limits. If you need continuous high-framerate gaming or heavy multitasking, the A51’s benchmark and review profile suggests limitations.

Display quality is a clear strength; the build has compromises

The A51 features a 6.5-inch AMOLED panel at 2400×1080 resolution (about 405 ppi per PCMag). Reviewers consistently praised the vivid colors and sharpness — PCMag called the screen “gorgeous” and TechRadar highlighted the bold OLED as a primary pro.

Build-wise, Samsung opted for a plastic back rather than glass (noted by TechRadar and HardwareCanucks), and the phone retains an in-display optical fingerprint sensor that multiple reviews found unreliable (PCMag reported it worked properly roughly 40% of the time). The unit also keeps a 3.5 mm headphone jack, which some reviewers listed as a positive.

Camera system: competent in good light, limited in low light and detail

Hardware: the A51 uses a 48 MP primary sensor as part of its multi-camera array. Wired summarized the cameras as snapping decent photos in good lighting, and PCMag described camera quality as one of the phone’s value points.

Limitations: multiple outlets warned that the cameras are not on par with higher-end Samsung models and that image quality drops in low light. HardwareCanucks and TechRadar noted that camera performance and overall imaging were weaker than on more expensive Galaxy models.

Battery life is generally solid but variable in crowd-sourced data

PCMag reported long battery life in their testing, and NanoReview’s battery sub-score of 51 indicates average-to-good endurance among units tested by users. UL Solutions cautions that crowd-sourced battery measurements vary widely because testers use different screen brightness settings, and the benchmark median can be affected by that variance.

In practice, reviewers found the phone’s endurance acceptable for day-to-day use; however, exact runtimes vary and public benchmark medians should be interpreted with that variation in mind.

Software experience is Samsung-style Android but with notable UX friction

The A51 runs Android 10 with Samsung’s interface. Reviewers observed the familiar Galaxy UI and feature set, which will be comfortable for existing Samsung users.

Usability pain points cited in reviews include the unreliable in-display optical fingerprint reader (PCMag ~40% success) and the phone feeling slower under load than many competitors; otherwise, the phone retains conveniences like a headphone jack and expandable storage on many variants.

Pros & Cons

• ✅ 6.5-inch AMOLED display with 2400×1080 resolution (about 405 ppi) — vivid and sharp per PCMag and TechRadar
• ✅ 48 MP primary camera that delivers decent photos in good lighting (Wired, PCMag)
• ✅ Multiple memory options up to 8 GB RAM and storage up to 128 GB
• ✅ Long battery life reported in editorial tests (PCMag) and average-to-good crowd-sourced battery score (NanoReview 51)
• ✅ Includes a 3.5 mm headphone jack (noted positively by TechRadar)

• ❌ GPU and gaming performance are weak for the class (3DMark Wild Life ~812; Graphics test ~4 FPS; NanoReview gaming 19/100)
• ❌ In-display optical fingerprint sensor is unreliable — PCMag reported it worked properly about 40% of the time
• ❌ Plastic back and other compromises versus higher-end Galaxy models (TechRadar, HardwareCanucks)
• ❌ Camera performance drops noticeably in low light and lags behind flagship and some higher-tier midrange phones (TechRadar, HardwareCanucks)

How It Compares to the Competition

• Apple iPhone SE (2020) — Stronger CPU performance and snappier real-world speed — PCMag explicitly said the A51 is no competitor to the iPhone SE in power.
• Samsung Galaxy S20 Fan Edition (S20 FE) — A closer Samsung alternative with higher-tier performance and cameras compared with the A51’s midrange chipset and camera compromises (TechRadar context).
• Samsung Galaxy S21 — Offers flagship-class performance and camera systems; the A51 is a lower-cost, lower-performance alternative for users prioritizing screen and battery over peak speed.

Who Should Buy This & Who Should Skip It

Buy it if: Buy the Galaxy A51 if you want a large 6.5-inch 2400×1080 AMOLED screen, need a 48 MP main camera that takes good daylight shots, value a headphone jack, and prefer Samsung’s software experience while accepting midrange performance.

Skip it if: Skip the A51 if you need strong gaming or CPU performance, a highly reliable biometric reader, or best-in-class low-light camera results — reviewers and benchmarks show the Exynos 9611 and in-display fingerprint sensor are limiting factors for power users.