Brand/Manufacture

Samsung

Samsung

Model

Samsung Galaxy A51

Samsung Galaxy S21

Code Name

SM-A515F, SM-A515F/DSN, SM-A515F/DS, SM-A515F/DST, SM-A515F/DSM, SM-A515F/N, SM-A515U, SM-A515U1, SM-A515W, SM-A515X, SM-S515DL

SM-G990F, SM-G990F/DS

Announcement Date

12 December 2019

Not announced yet

Official Release

16 December 2019

—

Official Availability

Available.

Cancelled

Release Country

India, United Kingdom, France, Netherlands, Bulgaria, Romania, Croatia, Portugal, Slovakia, Serbia, Sweden, Greece, Kazakhstan, Ukraine, Bangladesh, Philippines, Singapore, Thailand, Malaysia, Indonesia, Sri Lanka, Nepal, Laos, Myanmar, Iraq, Lebanon, Morocco, Egypt, Libya, Tunisia, Algeria, Nigeria, Kenya, Ghana, Afghanistan, Colombia, Argentina, Peru, Guatemala, Senegal, Saudi Arabia, South Africa, Australia, Uruguay, Paraguay, Mexico, Jamaica, Bahamas, Bolivia, Brazil, Pakistan, El Salvador, Costa Rica, Trinidad and Tobago, Chile

South Korea, United States, Canada, China, India, Singapore, Australia, United Kingdom, Europe (multiple countries including Germany, France, Spain, Italy), Southeast Asia

Screen Size

6.5 inches, 102.0 cm2(~87.4% screen-to-body ratio)

6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio),

Resolution & Pixel Density

1080 x 2400 pixels, 20:9 ratio, ~405 ppi density

1080 x 2400 pixels, 20:9 ratio, ~421 ppi density

Brightness/Color Depth

Super AMOLED

1300 nits (peak)

Panel Type

Super AMOLED

Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)

Extra Feature

Corning Gorilla Glass 3, No

Corning Gorilla Glass Victus, Always-on display

Dimensions (Size)

158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)

151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)

Physical Weight

172 g (6.07 oz)

169 g (5.96 oz)

Body Materials

Glass front (Gorilla Glass 3), plastic back, plastic frame

Glass front (Gorilla Glass Victus), plastic back, aluminum frame

Color Variant

Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink

Phantom Gray, Phantom White, Phantom Violet, Phantom Pink

RAM & ROM Variant

64GB, 128GB, 128GB, 128GB, 256GB

128GB, 256GB

Processor Variant

Exynos 9611 (10 nm)

Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm)

Core Chipset (CPU)

Exynos 9611 (10 nm)

Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm)

Graphics Power (GPU)

Mali-G72 MP3

Mali-G78 MP14 - InternationalAdreno 660

Operating System (OS)

Android 10, upgradable to Android 13, One UI 5

Android 11, up to 4 major Android upgrades, One UI 6.1

Sensor/lens

32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm

10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF

Video Recording

4K@30fps, 1080p@30fps

4K@30/60fps, 1080p@30fps

Features/Modes

HDR

HDR

Sensor/lens

48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF, 5 MP (macro) and Auxiliary lens

12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS

Telephoto Lens

No

64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom

Ultrawide Lens

12 MP, f/2.2, 123˚ (ultrawide)

12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video

3D ToF Sensor or LiDAR Scanner

No

No

Video Capabilities

4K@30fps, 1080p@30/120fps; gyro-EIS

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

Features/Modes

LED flash, panorama, HDR

LED flash, auto-HDR, panorama

Battery Capacity

4000 mAh

4000 mAh

Battery Type

Li-Po (non-removable)

Li-Ion (non-removable)

Charging Methods

15W wired

25W wired, PD3.015W wireless (Qi/PMA)4.5W reverse wireless

Reverse Charging Support

No

Yes

Network Technology

GSM / HSPA / LTE

GSM / CDMA / HSPA / EVDO / LTE

SIM-Support

Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

WiFi Version

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct

Bluetooth Version

5.0, A2DP, LE

5.0, A2DP, LE

USB Type

USB Type-C 2.0, OTG

USB Type-C 3.2, OTG

NFC Supported

Yes

Yes

Headphone Jack Supported

Yes

No

FM Radio Supported

FM radio

FM radio (Snapdragon model only; market/operator dependent)

Infrared Supported

No

No

Speakers

Yes

Yes, with stereo speakers

Dedicated Features

Virtual proximity sensingANT+

Samsung DeX, Samsung Wireless DeX (desktop experience support)Bixby natural language commands and dictationSamsung Pay (Visa, MasterCard certified)

Durability (Water & Dust)

No

IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)