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Full Differences
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Samsung Galaxy A21s

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Samsung Galaxy A21s
64GB 4GB RAM
$ 249.00 Deal
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Samsung Galaxy A51

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Samsung Galaxy A51
64GB 4GB RAM
$ 379.50 Deal
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Network Technology GSM / HSPA / LTE GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
  HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
  2, 4, 5, 12, 13, 25, 26, 41, 66, 71 - SM-A515U
Speed HSPA 42.2/5.76 Mbps, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Launch Announced 2020, May 15 2019, December 12
Status Available. Released 2020, June 02 Available. Released 2019, December 16
Body Dimensions 163.7 x 75.3 x 8.9 mm (6.44 x 2.96 x 0.35 in) 158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)
Weight 192 g (6.77 oz) 172 g (6.07 oz)
Build Glass front, plastic frame, plastic back Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Display Type PLS LCD Super AMOLED
Size 6.5 inches, 102.0 cm2 (~82.8% screen-to-body ratio) 6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio)
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 1080 x 2400 pixels, 20:9 ratio (~405 ppi density)
Protection Corning Gorilla Glass 3
Platform OS Android 10, upgradable to Android 11, One UI 3.1 Android 10, upgradable to Android 12, One UI 4.1
Chipset Exynos 850 (8nm) Exynos 9611 (10nm)
CPU Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU Mali-G52 Mali-G72 MP3
Memory Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 32GB 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 3GB RAM, 64GB 4GB RAM, 64GB 6GB RAM, 128GB 3GB RAM, 128GB 4GB RAM, 128GB 6GB RAM 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
 eMMC 5.1 UFS 2.0
Main Camera Modules 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 123˚ (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, 123˚ (ultrawide)
5 MP, f/2.4, (macro)
5 MP, f/2.2, (depth)
Features LED flash, panorama, HDR LED flash, panorama, HDR
Video [email protected] [email protected], [email protected]/120fps; gyro-EIS
Selfie Camera Modules 13 MP, f/2.2, (wide), 1/3.1", 1.12µm 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
Features HDR
Video [email protected] [email protected], [email protected]
Sound Loudspeaker Yes Yes
3.5mm jack Yes Yes
Comms WLAN 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
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS
NFC Yes (market/region dependent) Yes
Infrared port No No
Radio FM radio, RDS, recording FM radio
USB USB Type-C 2.0 USB Type-C 2.0, USB On-The-Go
Features Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, compass
  Virtual proximity sensing
ANT+
Battery Type Li-Po 5000 mAh, non-removable Li-Po 4000 mAh, non-removable
Charging Fast charging 15W Fast charging 15W
Stand-by
Talk time
Misc
Colors Black, White, Blue, Red Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink
SAR 0.80 W/kg (head)     0.67 W/kg (body)    
SAR EU 0.42 W/kg (head)     1.54 W/kg (body)     0.37 W/kg (head)     1.59 W/kg (body)    
Models SM-A217F, SM-A217F/DS, SM-A217F/DSN, SM-A217M, SM-A217M/DS, SM-A217N 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
Price $ 169.09 / C$ 589.00 / £ 165.00 / € 178.00 / Rp 2,745,000 $ 202.00 / C$ 420.00 / £ 279.99 / € 289.00
Tests Performance AnTuTu: 107157 (v8)
GeekBench: 1100 (v5.1)
GFXBench: 11fps (ES 3.1 onscreen)
AnTuTu: 113051 (v7), 175363 (v8)
GeekBench: 5401 (v4.4), 1294 (v5.1)
GFXBench: 5.6fps (ES 3.1 onscreen)
Display Contrast ratio: 1287:1 (nominal) Contrast ratio: Infinite (nominal)
Camera Compare PHOTO / Compare VIDEO
Loudspeaker -30.0 LUFS (Average) -28.6 LUFS (Average)
Audio quality Noise -93.1dB / Crosstalk -87.3dB
Battery life 119h endurance rating 86h endurance rating

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