Phone Comparison - Samsung Galaxy J3 (2017) vs Samsung Galaxy A51 vs Samsung Galaxy A21s

Price Comparison (India) - -

general General Info

Manufacturer Samsung Samsung Samsung
Announced June 2017 December 2019 Expected Announcement - May 2020
Status Available - June 2017 Coming Soon - December 12, 2019 Rumored
Price Rs. 14,000 ($220.00) [Similarly Priced] Rs. 23,999 ($0.00) [Similarly Priced] -
Colors Gold, Black, Pink Prism Crush White, Black, Pink, Blue Black, White, Blue
Form Factor Candybar Candybar Candybar
Dimension 143.2 x 70.3 x 7.9 mm
(5.64 x 2.77 x 0.31 in)
158.4 x 73.7 x 7.9 mm
(6.24 x 2.9 x 0.31 in)
8.9 mm thickness
(0.35 in thickness)
Weight 148 g (5.22 oz) 172 g (6.07 oz) 191 g (6.74 oz)
SIM Type Dual-SIM Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 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 Network HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100
4G Network LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) LTE (unspecified) LTE
Messaging SMS, MMS, EMail, IM
Build Features - - Fingerprint Sensor(In-display)
- Fingerprint Sensor
Notification LED No - -

hardware Hardware and OS

OS Android OS, v7.0 (Nougat) Android 9.0 (Pie) Android 10.0
User Interface TouchWiz One UI One UI 2.0
Processor Octa-core 1.4 GHz Cortex-A53, Exynos 7570 Quad Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) Octa-core 2.0 GHz, Exynos 850
GPU Mali-T720 MP2 Mali-G72 MP3 -
RAM 2 GB 8 GB 3 GB
Internal Memory 16 GB 128 GB 64 GB
External Memory microSD, up to 256 GB microSD, up to 512 GB (dedicated slot) microSDXC

display Display

Type Super AMOLED Capacitive Touchscreen Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen PLS TFT Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 6.5 inches 6.55 inches
Resolution 720 x 1280 pixels (294 ppi) 1080 x 2340 pixels (396 ppi) 720 x 1600 pixels (268 ppi)
Screen-to-Body Ratio 68.33% 89.06% -
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM radio -
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP 48 MP + 12 MP + 5 MP + 5 MP 48 MP + 8 MP + 2 MP
Flash LED Flash LED Flash LED Flash
Features AutoFocus, f/1.9 aperture, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF
12 MP, f/2.2, 13mm (ultrawide)
5 MP, f/2.2, depth sensor
5 MP, f/2.4, macro camera
Panorama, HDR
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
Panorama, HDR
Video 1080p@30fps 2160p@30fps, 1080p@30fps 1080p@30fps
Front Camera 5 MP, LED Flash [Similar] 32 MP, f/2.0, 25mm (wide)
HDR
1080p@30fps [Similar]
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE, VoLTE HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth v4.1, A2DP 5.0, A2DP, LE 5.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB microUSB v2.0 2.0, Type-C 1.0 reversible connector, USB On-The-Go Yes
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS
Browser HTML5 Yes Yes

memory User Memory

Internal 16 GB, 2 GB RAM 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM 64 GB, 3 GB RAM or 32 GB, 3 GB RAM
Expandable Storage microSD, up to 256 GB microSD, up to 512 GB (dedicated slot) microSDXC
USB OTG Not Supported Supported Supported

Apps Sensors

Fingerprint fingerprint not supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC not supported NFC supported

battery Battery

Type Li-Ion Battery Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Battery Charging 10W
Capacity 2400 mAh 4000 mAh 5000 mAh
Stand by Up to 408 h - -
Talk Time Up to 23 h - -