Phone Comparison - Samsung Galaxy J7 vs Samsung Galaxy A40 vs Samsung Galaxy A51

Price Comparison (India) -

general General Info

Manufacturer Samsung Samsung Samsung
Announced June 2015 March 2019 December 2019
Status Available - June 2015 Coming Soon - April 2019 Coming Soon - December 12, 2019
Price Rs. 13,400 ($197.06) [Similarly Priced] - Rs. 23,999 ($0.00) [Similarly Priced]
Colors White, Black Black, White, Blue, Coral Prism Crush White, Black, Pink, Blue
Form Factor Candybar Candybar Candybar
Dimension 152.4 x 78.6 x 7.5 mm
(6 x 3.09 x 0.3 in)
144.3 x 69.1 x 7.9 mm
(5.68 x 2.72 x 0.31 in)
158.4 x 73.7 x 7.9 mm
(6.24 x 2.9 x 0.31 in)
Weight 171 g (6.03 oz) - 172 g (6.07 oz)
SIM Type - 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 850 / 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 900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) LTE (unspecified)
Messaging SMS, MMS, EMail, IM
Build Features - - Fingerprint Sensor
- Fingerprint Sensor(In-display)

hardware Hardware and OS

OS Android OS, v5.1 (Lollipop) Android 9.0 (Pie) Android 9.0 (Pie)
Processor Octa-core 1.2 GHz, Exynos 7580 Octa-core (2x1.8 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53), Exynos 7885 Octa (14 nm) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm)
GPU Mali-T720 Mali-G71 Mali-G72 MP3
RAM 1.5 GB 4 GB 8 GB
Internal Memory 16 GB 64 GB 128 GB
External Memory microSD, up to 128 GB microSD, up to 512 GB (dedicated slot) microSD, up to 512 GB (dedicated slot)

display Display

Type Super AMOLED Capacitive Touchscreen Super AMOLED Capacitive Touchscreen Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.5 inches 5.9 inches 6.5 inches
Resolution 720 x 1280 pixels (267 ppi) 1080 x 2280 pixels (428 ppi) 1080 x 2340 pixels (396 ppi)
Screen-to-Body Ratio 69.63% 86.97% 89.06%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio with RDS; recording FM radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 16 MP + 5 MP 48 MP + 12 MP + 5 MP + 5 MP
Flash LED flash LED Flash LED Flash
Features Auto focus, Geo-tagging, Touch Focus, Beauty Face, Continuous Shots, Sensor Size: 1/3.06-inch, F1.9, Interval Shot, Panorama, Sports Mode, Sound and Shot Mode 16 MP, f/2.0, PDAF
5 MP, f/2.2, 12mm, (ultrawide)
Panorama, HDR
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
Video 1080p@30fps 2160p@30fps, 1080p@30fps 2160p@30fps, 1080p@30fps
Front Camera 5 MP [Similar] 25 MP, 1080p@30fps [Similar] 32 MP, f/2.0, 25mm (wide)
HDR
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat12 600/150 Mbps HSPA, LTE-A
Bluetooth v4.1, A2DP 4.2, 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, WiFi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB microUSB v2.0 Type-C 1.0 reversible connector 2.0, Type-C 1.0 reversible connector, USB On-The-Go
GPS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser HTML5 Yes Yes

memory User Memory

Internal 16 GB, 1.5 GB RAM 64 GB, 4 GB RAM 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM
Expandable Storage microSD, up to 128 GB microSD, up to 512 GB (dedicated slot) microSD, up to 512 GB (dedicated slot)
USB OTG - 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 not supported NFC supported NFC not supported

battery Battery

Type Li-Ion Battery Non-removable Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 15W
Capacity 3000 mAh 3100 mAh 4000 mAh
Stand by Up to 354 h - -
Talk Time Up to 18 h (3G) - -