Phone Comparison - Samsung Galaxy A51 vs Samsung Galaxy A71 vs Xiaomi Redmi 9i

Price Comparison (India) -

general General Info

Manufacturer Samsung Samsung Xiaomi
Announced December 2019 December 2019 2020, September 15
Status Coming Soon - December 12, 2019 Available. Released 2020, January Coming soon. Exp. release 2020, September 18
Price Rs. 23,999 ($0.00) [Similarly Priced] Rs. 29,999 ($0.00) [Similarly Priced] Rs. 8,299 ($0.00) [Similarly Priced]
Colors Prism Crush White, Black, Pink, Blue Prism Crush White, Black, Pink, Blue Midnight Black, Sea Blue, Nature Green
Form Factor Candybar Candybar Candybar
Dimension 158.4 x 73.7 x 7.9 mm
(6.24 x 2.9 x 0.31 in)
163.6 x 76.0 x 7.7 mm
(6.44 x 2.99 x 0.3 in)
164.9 x 77.1 x 9 mm
(6.49 x 3.04 x 0.35 in)
Weight 172 g (6.07 oz) 179 g (6.31 oz) 194 g (6.84 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) Dual SIM (Nano-SIM, dual stand-by)
2G Network 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) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100
4G Network LTE (unspecified) LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100) 1, 3, 5, 8, 40, 41
Messaging
Build Features - Fingerprint Sensor(In-display)
- Fingerprint Sensor(In-display)
-

hardware Hardware and OS

OS Android 9.0 (Pie) Android 10.0 Android 10
User Interface One UI One UI 2.0 MIUI 12
Processor Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730 (8 nm) Octa-core (4x2.0 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53), MediaTek Helio G25 (12 nm)
GPU Mali-G72 MP3 Adreno 618 PowerVR GE8320
RAM 8 GB 8 GB 4 GB
Internal Memory 128 GB 128 GB 128 GB
External Memory microSD, up to 512 GB (dedicated slot) microSD, up to 512 GB (dedicated slot) microSDXC (dedicated slot)

display Display

Type Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen IPS LCD capacitive touchscreen
270 nits typ. brightness (advertised)
Colors 16M colors 16M colors 16M Colour
Size 6.5 inches 6.7 inches 6.53 inches
Resolution 1080 x 2340 pixels (396 ppi) 1080 x 2400 pixels (393 ppi) 720 x 1600 pixels (269 ppi)
Screen-to-Body Ratio 89.06% 87.08% 80.79%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 48 MP + 12 MP + 5 MP + 5 MP 64 MP + 12 MP + 5 MP + 5 MP 13 MP
Flash LED Flash LED Flash LED Flash
Features 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
64 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
13 MP, f/2.2, 28mm (wide), 1.0µm, PDAF
HDR
Video 2160p@30fps, 1080p@30fps 2160p@30fps, 1080p@30/60/240fps, 1080p@960fps; gyro-EIS 1080p@30fps
Front Camera 32 MP, f/2.0, 25mm (wide)
HDR
1080p@30fps [Similar]
32 MP, f/2.0, 25mm (wide)
HDR
1080p@30fps [Similar]
5 MP, f/2.2, (wide), 1.12µm, HDR, 1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE-A HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE 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 b/g/n, Wi-Fi Direct, hotspot
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go 2.0, Type-C 1.0 reversible connector, USB On-The-Go microUSB 2.0, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, BDS
Browser Yes Yes Yes

memory User Memory

Internal 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM 128 GB, 8 GB RAM 128 GB, 4 GB RAM or 64 GB, 4 GB RAM
Expandable Storage microSD, up to 512 GB (dedicated slot) microSD, up to 512 GB (dedicated slot) microSDXC (dedicated slot)
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint not 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 not present
NFC NFC not supported NFC not supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Fast battery charging 25W
Non-removable Li-Po Battery
Battery Charging 10W
Capacity 4000 mAh 4000 mAh 5000 mAh
Stand by - - -
Talk Time - - -