Samsung
Samsung Galaxy S21
The plastic-backed S21 that history vindicated: compact, capable, and $200 cheaper than the S20 it replaced. The contour-cut camera design aged into a classic.
Pros
- Compact flagship dimensions
- Excellent flat 120Hz AMOLED
- Price cut that reset the segment
- Distinctive design that lasted
Cons
- Plastic back on a flagship
- No microSD or charger in box
- Exynos 2100 trailed the Snapdragon variant
Below average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Samsung Galaxy S21
Display
- Screen size
- 6.2 ″
- Panel type
- AMOLED
- Resolution
- 2400x1080
- Pixel density
- 421 ppi
- Refresh rate
- 120 Hz
- Peak brightness
- 1,300 nits
- AnTuTu 10 (CPU)
- 252,025Top 94%
- AnTuTu 10 (GPU)
- 127,819Top 79%
- AnTuTu 10 (Memory)
- 144,909Top 91%
- AnTuTu 10 (UX)
- 221,794Top 88%
Performance
- Chipset
- Samsung Exynos 2100
- AnTuTu 10
- 746,547Top 66%
- Geekbench 6 (single)
- 1,430Top 52%
- Geekbench 6 (multi)
- 3,550Top 56%
- RAM (max)
- 8 GB
- Storage options
- 128GB / 256GB
- Storage type
- UFS 3.1
Camera
- Main camera
- 12 MP
- Main aperture
- f/1.8
- Ultra-wide
- 12 MP
- Telephoto
- 64 MP
- Max video
- 8K@24fps
- Front camera
- 10 MP
- OIS
- Yes
Battery
- Capacity
- 4,000 mAh
- Wired charging
- 25 W
- Wireless charging
- 15 W
Design
- Weight
- 171 g
- Thickness
- 7.9 mm
- IP rating
- IP68
- Frame material
- Aluminum
Connectivity
- 5G
- Yes
- Wi-Fi
- Wi-Fi 6
- Bluetooth
- 5.0
- NFC
- Yes
- USB
- USB-C 3.2
- eSIM
- Yes
Software
- OS at launch
- Android 11 (One UI 3.1)
- OS update pledge
- 4 years
Audio
- Stereo speakers
- Yes
- 3.5mm jack
- No
Quick answers
Is the Samsung Galaxy S21 good in 2026?
The Samsung Galaxy S21 earns an Inno Score of 43.6/100 (“Below average”) based on its specs and benchmark results. The plastic-backed S21 that history vindicated: compact, capable, and $200 cheaper than the S20 it replaced. The contour-cut camera design aged into a classic.
What is the Samsung Galaxy S21 AnTuTu score?
The Samsung Galaxy S21 scores 746,547 points in AnTuTu 10 (CPU 252,025, GPU 127,819, Memory 144,909, UX 221,794). That puts it in the top 66% of the chips and devices we have measured in this category. In Geekbench 6 it reaches 1,430 single-core and 3,550 multi-core.
What are the key specs of the Samsung Galaxy S21?
Chipset: Samsung Exynos 2100 · Screen size: 6.2 ″ · Capacity: 4,000 mAh · Main camera: 12 MP
What are the closest alternatives to the Samsung Galaxy S21?
Its closest rivals on InnoReviews are Honor X9b, POCO M6 Pro (4G), POCO X5 Pro — open the comparison pages for a spec-by-spec breakdown.
