Samsung Galaxy S21

Samsung Galaxy S21 series
From left to right S21, S21 FE, S21+, and S21 Ultra.
BrandSamsung
ManufacturerSamsung Electronics
TypeS21: Smartphone
S21+, S21 Ultra and S21 FE: Phablet
SeriesGalaxy S
FamilySamsung Galaxy
First releasedS21, S21+ and S21 Ultra: January 14, 2021 (2021-01-14)
S21 FE: January 4, 2022 (2022-01-04)
Availability by regionS21, S21+ and S21 Ultra: January 29, 2021 (2021-01-29)
S21 FE: January 7, 2022 (2022-01-07)
DiscontinuedS21, S21+ and S21 Ultra: February 25, 2022 (2022-02-25)
S21 FE: October 3, 2023 (2023-10-03)
Units shipped25.5 million
PredecessorSamsung Galaxy S20
Samsung Galaxy Note 20 (indirect for S21 Ultra)
SuccessorSamsung Galaxy S22
Samsung Galaxy S23 FE (for S21 FE)
RelatedSamsung Galaxy Z Fold 3
Samsung Galaxy Z Flip 3
Compatible networks2G, 3G, 4G, 5G
Form factorSlate
DimensionsS21: 151.7 × 71.2 × 7.9 mm (5.97 × 2.80 × 0.31 in)
S21+: 161.5 × 75.6 × 7.8 mm (6.36 × 2.98 × 0.31 in)
S21 Ultra: 165.1 × 75.6 × 8.9 mm (6.50 × 2.98 × 0.35 in)
S21 FE: 155.7 × 74.5 × 7.9 mm (6.13 × 2.93 × 0.31 in)
WeightS21: 169 g (6.0 oz)
S21+: 200 g (7.1 oz)
S21 Ultra: 227 g (8.0 oz)
S21 FE: 177 g (6.2 oz)
Operating systemS21, S21+ and S21 Ultra:
Original: Android 11 with One UI 3.1
Current: Android 15 with One UI 7
S21 FE:
Original: Android 12 with One UI 4
Current: Android 16 with One UI 8
System-on-chip
CPUExynos: Octa-core (1x2.9 GHz Cortex-X1, 3x2.80 GHz Cortex-A78 and 4x2.2 GHz Cortex-A55)
Snapdragon: Octa-core (1x2.84 GHz, 3x2.42 GHz and 4x1.80 GHz) Kryo 680
GPUExynos: Mali-G78 MP14
Snapdragon: Adreno 660
MemoryS21 and S21+: 8 GB RAM
S21 Ultra: 12/16 GB RAM
S21 FE 6/8 GB RAM
StorageS21, S21+ and S21 FE: 128/256 GB UFS 3.1
S21 Ultra: 128/256/512 GB UFS 3.1
Removable storageNone
SIMnanoSIM, eSIM
Single SIM or Hybrid Dual SIM in dual stand-by
BatteryS21: 4000 mAh Lithium polymer
S21+: 4800 mAh Lithium polymer
S21 Ultra: 5000 mAh Lithium polymer
S21 FE: 4500 mAh Lithium polymer
ChargingUSB PD: 25W (PPS), 15W (non-PPS)
15 W QI wireless
4.5 W Reverse wireless
Rear cameraAll: Features: LED flash, auto-HDR, panorama

Video: 8K@24fps, 4K@30/60fps, 1080p@30/60/120fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
S21 and S21+:
12 MP, f/1.8, 26 mm (wide), 1/1.76", 1.8 μm, Dual Pixel PDAF, OIS
64 MP, f/2.0, 28 mm (telephoto), 1/1.76", 0.8 μm, PDAF, OIS, 1.1x optical, 3x hybrid
12 MP, f/2.2, 13 mm 120° (ultrawide), 1/2.55" 1.4 μm, Super Steady video S21 Ultra:
108 MP (2nd gen), f/1.8, 26 mm (wide), 1/1.33", 0.8 μm, PDAF, Laser AF, OIS
10 MP, f/4.9, 240 mm (periscope telephoto), 1/3.24", 1.22 μm, dual pixel PDAF, OIS, 10x optical
10 MP, f/2.4, 70 mm (telephoto), 1/3.24", 1.22 μm, dual pixel PDAF, OIS, 3x optical
12 MP, f/2.2, 13 mm (ultrawide), 1/2.55", 1.4 μm, dual pixel PDAF, Super Steady video

S21 FE:
12 MP, f/1.8, 26 mm (wide), Dual Pixel PDAF, OIS
8 MP, f/2.4, 76 mm (telephoto), 1/1.76", 0.8 μm, PDAF, 3x optical
12 MP, f/2.2, 13 mm 123° (ultrawide)
Front cameraS21 and S21+: 10 MP, f/2.2, 26 mm (wide), 1/3.24", 1.22 μm, Dual Pixel PDAF
S21 Ultra: 40 MP, f/2.2, 26 mm (wide), 1/2.8", 0.7 μm, PDAF
S21 FE: 32 MP, f/2.2, 26 mm (wide), 1/2.74", 0.8 μm, Dual Pixel PDAF
Display
  • Dynamic AMOLED 2X Infinity-O capacitive touchscreen, 10Hz-120 Hz refresh rate, 20:9 aspect ratio, HDR10+,
    (Diamond PenTile)
  • S21: 6.2 in (160 mm) 2400 × 1080 (2.5 MP) (421 ppi) 1300 nits
  • S21+: 6.7 in (170 mm) 2400 × 1080 (394 ppi) 1300 nits
  • S21 Ultra: 6.8 in (170 mm) 3200 × 1440 (4.6 MP) (515 ppi) 1600 nits
  • S21 FE: 6.4 in (160 mm) 2340 × 1080 (411 ppi) 1300 nits
External displayAlways on
SoundDolby Atmos stereo speakers tuned by AKG
ConnectivityBluetooth 5.2
Wi-Fi 802.11 a/b/g/n/ac/ax(Wi-Fi 6E: S21 Ultra)
Data inputsUSB-C 3.2

Sensors:

Water resistanceIP68 water/dust resistance, up to 1.5 m for 30 minutes
Website
References

The Samsung Galaxy S21 is a series of high-end Android-based smartphones developed, marketed, and manufactured by Samsung Electronics as part of its flagship Galaxy S series. They collectively serve as the successor to the Galaxy S20 series. The first three smartphones (Galaxy S21, Galaxy S21+, Galaxy S21 Ultra) were unveiled at Samsung's Galaxy Unpacked event on January 14, 2021, while the Galaxy S21 FE was unveiled at Samsung's CES on January 4, 2022. The first three phones were released in the United States and Europe on January 29, 2021, while the Fan Edition was released globally on January 7, 2022.

The Galaxy S21 was succeeded by the Galaxy S22, which was announced on February 9, 2022.