Galaxy M31 review: Battery monster with 6000 mAh and 64 MP quad cam.
Two-day battery champ.
M31 stuffed a 6000 mAh cell behind a Super AMOLED and 64 MP quad cam at $279, making it the endurance king of Samsung's online M-series. The 15W charging was the trade-off for that enormous battery.
01Display
80/100At 80/100 this is one of the strongest display showings among budget phones of 2020 — 17 points above the cohort average.
02Camera
68/100At 68/100 this is one of the strongest camera showings among budget phones of 2020 — 12 points above the cohort average.
03Performance
62/100At 62/100 this is one of the strongest performance showings among budget phones of 2020 — 12 points above the cohort average.
04Battery
88/100At 88/100 this is one of the strongest battery showings among budget phones of 2020 — 10 points above the cohort average.
05Build
64/10064/100 puts it above the 60-point average for budget phones of 2020.
- Huge 6000 mAh — 2-day battery
- 64 MP main + AMOLED at $279
- Online-exclusive value pricing
- Exynos 9611 sluggish
- Slow 15W charging for the big cell
- 2-day battery means slow recharge
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 118-phone cohort of budget devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .