Compare cell phones - smartphone specs comparison
Samsung Galaxy A21 vs Samsung Galaxy A51 : What is the Difference?
- Release Date: 2020, April 8 | 2019, December
- Dimensions: 167.8 x 76.7 x 8.1 mm | 158.5 x 73.6 x 7.9 mm
- Weight: 193 g | 172 g
- Screen: 6.5", IPS LCD | 6.5", Super AMOLED
- Main Camera: Quad, 16 MP | Quad, 48 MP
- Selfi Camera: Single, 13 MP | Single, 32 MP
- Memory: 32GB 3GB RAM | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
- Battery: 4000 mAh | 4000 mAh
- Headphone Jack: Yes | Yes
- Approximate price: 199 EUR | $280
Continue reading and check the table below for full detailed comparison of all phones specs .
or
![]() |
|||
---|---|---|---|
Brand and model | Samsung Galaxy A21 | Samsung Galaxy A51 | |
Rating | (+1) | (+1) | |
Release date | 2020, April 8 | 2019, December | |
Dimensions (HxWxD) | 167.8 x 76.7 x 8.1 mm | 6.61 x 6.61 x 3.02 in | 158.5 x 73.6 x 7.9 mm | 6.24 x 6.24 x 2.9 in | |
Weight | 193 g | 6.81 oz | 172 g | 6.07 oz | |
Body Build | Glass front, plastic back, plastic frame | Glass front (Gorilla Glass 3), plastic back, plastic frame | |
Colors | Black | Prism Crush Black, White, Blue, Pink | |
Battery | 4000 mAh, Non-removable Li-Po | 4000 mAh, Non-removable Li-Po | |
Battery life |
Talking time - Up to 32 h (3G) Music play - Up to 87 h |
||
Approximate price | 199 EUR | $280 |
![]() |
|||
---|---|---|---|
Technology | IPS LCD | Super AMOLED | |
Touchscreen | capacitive touchscreen | capacitive touchscreen | |
Display colors | 16M | 16M | |
Screen size | 6.5" inc | 6.5" inc | |
Screen area | 102.0 cm2 | 102.0 cm2 | |
Screen format | 20:9 (height:width) | 20:9 (height:width) | |
Screen to body ratio | 79.3% | 87.4% | |
Screen resolution | 720 x 1600 px | 1080 x 2400 px | |
Screen PPI /points per inch/ | 270 PPI | 405 PPI | |
Screen protection | Corning Gorilla Glass 3 |
![]() |
|||
---|---|---|---|
Rear camera, main | 16 MP, Quad | 48 MP, Quad | |
Camera specs | -16 MP, f/1.8, (wide), 1/3.06", 1.0µm, PDAF -8 MP, f/2.2, (ultrawide), 1/4.0", 1.12µm -2 MP, f/2.4, (macro) -2 MP, f/2.4, (depth) |
-48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF -12 MP, f/2.2, 12mm (ultrawide) -5 MP, f/2.4, 25mm (macro), 1/5.0", 1.12µm -5 MP, f/2.2, 1/5.0", 1.12µm, depth sensor |
|
Functions | LED flash, panorama, HDR | LED flash, panorama, HDR | |
Video | 1080p@30fps | 2160p@30fps, 1080p@30/120fps; gyro-EIS | |
DxOMark Main Score | 87 | ||
DxOMark Photo | 90 | ||
DxOMark Video | 86 | ||
Front camera, selfie | 13 MP, Single | 32 MP, Single | |
Specifications | 13 MP, f/2.0, (wide) | 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm | |
Functions | HDR | ||
Video | 1080p@30fps | 1080p@30fps |
![]() |
|||
---|---|---|---|
Operating system - OS | Android 10.0; One UI 2.0 | Android 10.0; One UI 2 | |
Chipset | - Exynos 9611 (10nm) | ||
Processor CPU | - Octa-core (4x2.3 GHz & 4x1.8 GHz) | - Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) | |
Graphics processor GPU | Mali-G72 MP3 | ||
External memory | microSDXC (dedicated slot) | microSD, up to 1 TB (dedicated slot) | |
Internal memory | 32GB 3GB RAM | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM | |
Antutu 8 score | 102874 | 192677 | |
Antutu 7 score | 155326 | ||
GeekBench 5 Single Core | 193 | 322 | |
GeekBench 5 Multi-Core | 975 | 1212 | |
GeekBench 4 Single Core | 740 | ||
GeekBench 4 Multi-Core | 4039 |
![]() |
|||
---|---|---|---|
SIM card | Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by) | |
Network | GSM / HSPA / LTE | GSM / HSPA / LTE | |
Show all network frequencies: |
|||
Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE-A | |
GPRS | Yes | Yes | |
Edge | Yes | Yes | |
Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS | |
NFC | Yes (market/region dependent) | Yes | |
USB | 2.0, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | |
Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | |
Harmful irradiation | SAR - 1.27 W/kg (head) 0.60 W/kg (body) |
SAR - 0.80 W/kg (head) 0.67 W/kg (body) SAR EU - 0.37 W/kg (head) 1.59 W/kg (body) |
![]() |
|||
---|---|---|---|
Radio | FM radio | FM radio | |
Headphone jack | Yes | Yes | |
Others | - Active noise cancellation with dedicated mic |
![]() |
|||
---|---|---|---|
Sensors | - Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | - Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | |
Other extras |
- Fast charging 15W |
- ANT+ - Fast battery charging 15W |
|
Versions |
- Versions: SM-A515F/DSN (Global); SM-A515F/DS (LATAM); SM-A515F/DST (Brazil); SM-A515F/DSM (Russia); SM-A515F/N (Australia) |
VIDEO COMPARISON - not found
Samsung Galaxy A21 vs Samsung Galaxy A51
Share on Share on