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
Global
Global
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, N/A
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
N/A
12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS64 MP, f/2.0, 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom12 MP, f/2.2, 13mm, 1/2.55" 1.4µm, Super Steady video
Telephoto Lens
No
29mm (telephoto)
Ultrawide Lens
No
120˚ (ultrawide)
3D ToF Sensor or LiDAR Scanner
N/A
N/A
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
Li-Po 4000 mAh
Li-Ion 4000 mAh
Battery Type
non-removable
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)
N/A
N/A
