Phone Comparison - Samsung Galaxy A21s vs Samsung Galaxy A12 vs Xiaomi Redmi 9T

general General Info

Manufacturer Samsung Samsung Xiaomi
Announced Expected Announcement - May 2020 2020, November 24 January 2021
Status Rumored Coming Soon - January 2021 Coming Soon - January 2021
Price - Rs. 12,999 ($0.00) [Similarly Priced] -
Colors Black, White, Blue Black, White, Blue, Red Carbon Gray, Twilight Blue, Sunrise Orange, Ocean Green
Form Factor Candybar Candybar Candybar
Dimension 8.9 mm thickness
(0.35 in thickness)
164 x 75.8 x 8.9 mm
(6.46 x 2.98 x 0.35 in)
162.3 x 77.3 x 9.6 mm
(6.39 x 3.04 x 0.38 in)
Weight 191 g (6.74 oz) 205 g (7.23 oz) 198 g (6.98 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 only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE LTE (unspecified) 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor (side-mounted)
- Fingerprint Sensor
Water-repellent coating

hardware Hardware and OS

OS Android 10.0 Android 10 Android 10
User Interface One UI 2.0 - MIUI 12
Processor Octa-core 2.0 GHz, Exynos 850 Octa-core (2.3 GHz, 1.8 GHz) Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver), Qualcomm SM6115 Snapdragon 662 (11 nm)
GPU - - Adreno 610
RAM 3 GB 4 GB 6 GB
Internal Memory 64 GB 128 GB 128 GB
External Memory microSDXC microSDXC microSDXC (dedicated slot)

display Display

Type PLS TFT Capacitive Touchscreen HD+ TFT display IPS LCD Screen
400 nits (typ)
Corning Gorilla Glass 3
Colors 16M colors 16M Colour 16M Colour
Size 6.55 inches 6.5 inches 6.53 inches
Resolution 720 x 1600 pixels (268 ppi) 720 x 1560 pixels (264 ppi) 1080 x 2340 pixels (395 ppi)
Screen-to-Body Ratio - 83.64% 83.29%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 48 MP + 8 MP + 2 MP 48 MP + 5 MP + 2 MP + 2 MP 48 MP + 8 MP + 2 MP + 2 MP
Flash LED Flash LED flash LED Flash
Features 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
48 MP, f/2.0, (wide), AF
5 MP, f/2.2, 115˚ (ultrawide)
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)
panorama, HDR
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)
HDR, panorama
Video 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]
8 MP, f/2.2
1080p@30fps [Similar]
8 MP, f/2.0, 27mm (wide), 1/4.0", 1.12µm
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE-A HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth 5.0, A2DP, LE Yes 5.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Yes Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB Yes USB Type-C 2.0 USB Type-C 2.0, USB On-The-Go
GPS Yes, with A-GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser Yes Yes Yes

memory User Memory

Internal 64 GB, 3 GB RAM or 32 GB, 3 GB RAM 128 GB, 4 GB RAM or 64 GB, 4 GB RAM or 64 GB, 3 GB RAM or 32 GB, 3 GB RAM 128 GB, 6 GB RAM or 128 GB (UFS 2.2), 4 GB RAM or 64 GB (UFS 2.1), 4 GB RAM
Expandable Storage microSDXC microSDXC microSDXC (dedicated slot)
USB OTG Supported Not Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor not present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor not present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor not present magnetic field sensor not present magnetic field sensor present
Gyroscope Sensor gyroscope sensor not present gyroscope sensor not present gyroscope sensor not present
NFC NFC supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Po Battery
Battery Charging 10W
Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Fast battery charging 18W
Reverse charging 2.5W
Capacity 5000 mAh 5000 mAh 6000 mAh
Stand by - - -
Talk Time - - -