Samsung Galaxy S21
2021 · android · Flagship
Specs
| SoC | Samsung Exynos 2100 |
|---|---|
| Benchmarks | GB multi 3555 · AnTuTu 1,065,369 |
| Display | 6.2" 120Hz OLED · 800 nits |
| Battery | 4,000 mAh · 25W charge |
| Cameras | 12MP main · 64MP ultrawide · 12MP tele · video 8K24 |
| Body | 169g · OS updates 2 yrs |
Memory variants
| RAM / Storage | Price new | Price used | Listings |
|---|---|---|---|
| 8 / 128 GB | $800 | $140 |
19 listings
$ 109 ·
health n/a ·
2026-09-05
$ 119 ·
health n/a ·
2026-09-05
$ 120 ·
health n/a ·
2026-09-05
$ 125 ·
health n/a ·
2026-09-05
$ 140 ·
health n/a ·
2026-09-05
$ 150 ·
health n/a ·
2026-09-05
$ 150 ·
health n/a ·
2026-09-05
$ 159 ·
health n/a ·
2026-09-05
$ 160 ·
health n/a ·
2026-09-05
$ 92 ·
health n/a ·
2026-09-15
$ 119 ·
health n/a ·
2026-09-15
$ 125 ·
health n/a ·
2026-09-15
$ 130 ·
health n/a ·
2026-09-15
$ 140 ·
health n/a ·
2026-09-15
$ 150 ·
health n/a ·
2026-09-15
$ 150 ·
health n/a ·
2026-09-15
$ 160 ·
health n/a ·
2026-09-15
$ 160 ·
health n/a ·
2026-09-15
$ 171 ·
health n/a ·
2026-09-15
|
| 8 / 256 GB | — | $125 |
1 listing
$ 125 ·
health n/a ·
2026-09-15
|
Overall score
mid (0–100 composite of performance, battery, value and longevity)
Your focus
Samsung Galaxy S21 review: specs, battery & used prices
Samsung Galaxy S21 review: 6.2" display, 4000 mAh battery, Samsung Exynos 2100, real-world verdict and used-market prices.
Task axes
Resale trend
Estimate from two anchors: launch MSRP $800 (2021) and used-market median $140 (2026).
−29% / year · next year ≈ $99
Cost to own ≈ $2.9/mo · buying now at $140, 2-year horizon
Money could earn ≈ $0.5/mo · the $140 kept at 4.21%/yr (US Treasury 3-month bill, as of Nov 2, 2026)
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