Galaxy M51 review: A 2020 endurance phone with a class-leading 7,000 mAh battery.
The 7,000 mAh endurance phone.
Galaxy M51 made battery life its entire pitch — a 7,000 mAh cell that delivered three-day endurance, paired with a Super AMOLED and 64 MP camera. Heavy but unmatched, it became Samsung's endurance benchmark.
01Display
78/10078/100 puts it above the 75-point average for mid-range phones of 2020.
02Camera
66/10066/100 — right at the average for mid-range phones of 2020.
03Performance
64/10064/100 — right at the average for mid-range phones of 2020.
04Battery
96/100At 96/100 this is one of the strongest battery showings among mid-range phones of 2020 — 22 points above the cohort average.
05Build
64/10064/100 is one of the weaker build results among mid-range phones of 2020 — 8 points under the average. Check the rows below before buying for this.
06Value
72/10072/100 puts it above the 68-point average for mid-range phones of 2020.
- Class-leading 7,000 mAh battery.
- Super AMOLED + 64 MP quad cam.
- 25 W charging + reverse charging.
- Stereo speakers + jack + microSD.
- Heavy 213 g.
- 60 Hz only.
- 5 MP filler lenses.
- Plastic Glasstic build.
How this review is built: every section score, spec row and comparison on this page comes from SpecEagle's tracked catalogue — scores weight measured specs against the 104-phone cohort of mid-range devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .