Phone Comparison - Samsung Galaxy S7 vs Samsung Galaxy S9 vs Samsung Galaxy A51

Price Comparison (India) - -

general General Info

Manufacturer Samsung Samsung Samsung
Announced February 2016 February 2018 December 2019
Status Available - March 2016 Coming Soon, March 2018 Coming Soon - December 12, 2019
Price Rs. 43,400 ($638.24) [Similarly Priced] Rs. 52,999 ($750.00) [Similarly Priced] Rs. 23,999 ($0.00) [Similarly Priced]
Colors Black, Gold, Silver Various Prism Crush White, Black, Pink, Blue
Form Factor Candybar Candybar Candybar
Dimension 142.4 x 69.6 x 7.9 mm
(5.61 x 2.74 x 0.31 in)
147.7 x 68.7 x 8.5 mm
(5.81 x 2.7 x 0.33 in)
158.4 x 73.7 x 7.9 mm
(6.24 x 2.9 x 0.31 in)
Weight 152 g (5.36 oz) 163 g (5.75 oz) 172 g (6.07 oz)
SIM Type Single SIM (Nano-SIM), Dual SIM (Nano-SIM, Dual Stand-by) Single SIM (Nano-SIM), Hybrid 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 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 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE LTE LTE (unspecified)
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM
Build Features - Heart rate sensor
- Fingerprint sensor
- IP68 certified - dust and water resistant
- Water resistant up to 1 meter and 30 minutes
- Fingerprint Sensor
- Samsung Pay (Visa, MasterCard certified)
- IP68 certified - dust/water proof over 1.5 meter and 30 minutes
- Fingerprint Sensor(In-display)
Notification LED - Yes -

hardware Hardware and OS

OS Android OS, v6.0 (Marshmallow) Android 8.0 (Oreo) Android 9.0 (Pie)
User Interface TouchWiz UI Samsung Experience One UI
Processor Quad-core (2x 2.15 GHz Kryo & 2x 1.6 GHz Kryo)/ Octa-core (4x2.3 GHz Mongoose & 4x1.6 GHz Cortex-A53) , Qualcomm MSM8996 Snapdragon 820/ Exynos 8 Octa 8890 Octa-core (4x2.8 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA
Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA & China, Exynos 9810 Octa - EMEA
Qualcomm Snapdragon 845
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm)
GPU Adreno 530/ Mali-T880 MP12 Mali-G72 MP18 - EMEA
Adreno 630 - USA & China
Mali-G72 MP3
RAM 4 GB 4 GB 8 GB
Internal Memory 32/64 GB 64 GB 128 GB
External Memory microSD, up to 2 TB microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only microSD, up to 512 GB (dedicated slot)

display Display

Type Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5, Always-on display Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.1 inches 5.8 inches 6.5 inches
Resolution 1440 x 2560 pixels (576 ppi) 1440 x 2960 pixels (568 ppi) 1080 x 2340 pixels (396 ppi)
Screen-to-Body Ratio 72.33% 84.00% 89.06%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio - No FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera Dual Pixel 12 MP, 4608 x 2592 pixels 12 MP 48 MP + 12 MP + 5 MP + 5 MP
Flash Dual-LED (Dual Tone) LED Flash LED Flash
Features Phase Detection Autofocus, f/1.7, 1/2.6' Sensor Size, 1 µm Pixel Size,Smart Optical Image Stablization, Geo-tagging, Touch Focus, Face Detection, Auto HDR, Panorama Phase Detection Autofocus, f/1.5 - f/2.4 variable aperture lens, 26mm, 1/2.5", 1.4 µm, Dual Pixel PDAF, OIS, Geo-tagging, Simultaneous 4K Video And 9MP Image Recording, Touch Focus, Face/smile Detection, Auto 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
Video 2160p@30fps, 1080p@60fps, 720p@120fps, HDR, dual-video rec. 2160p@30fps, 1080p@60fps, HDR, dual-video rec. 2160p@30fps, 1080p@30fps
Front Camera 5 MP, f/1.7, Dual Video Call, Auto HDR [Similar] 8 MP, f/1.6, autofocus, 1440p, dual video call, Auto HDR [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 Cat9 450/50 Mbps HSPA 42.2/5.76 Mbps, LTE-A (4CA) Cat16 1024/150 Mbps HSPA, LTE-A
Bluetooth v4.2, A2DP, LE, apt-X 5.0, A2DP, LE, aptX 5.0, A2DP, LE
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 Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB microUSB v2.0, USB Host 3.1, Type-C 1.0 reversible connector 2.0, Type-C 1.0 reversible connector, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, BDS, GALILEO Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser HTML5 HTML5 Yes

memory User Memory

Internal 32/64 GB, 4 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 2 TB microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only microSD, up to 512 GB (dedicated slot)
USB OTG Supported Not Supported Supported

Apps Sensors

Fingerprint fingerprint 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
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor present gyroscope sensor present gyroscope sensor present
Barometer Sensor barometer sensor present barometer sensor present barometer sensor not present
Heart-rate Sensor heart rate sensor present heart rate sensor present heart rate sensor not present
NFC NFC supported NFC supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Ion battery Non-removable Li-Po Battery
Fast battery charging 15W
Capacity 3000 mAh 3000 mAh 4000 mAh
Stand by - - -
Talk Time - - -