Samsung Galaxy A40 vs Xiaomi Redmi 9C vs Samsung Galaxy A02s

General Info

Manufacturer
Samsung	Xiaomi	Samsung
Announced
March 2019	Not announced yet	2020, November 24
Status
Coming Soon - April 2019	Rumored	Coming Soon - Februrary 2021
Colors
Black, White, Blue, Coral	Blue, other colors	Black, White
Form Factor
Candybar	Candybar	Candybar
Dimension
144.3 x 69.1 x 7.9 mm (5.68 x 2.72 x 0.31 in)	-	-
Weight
-	-	-
SIM Type
Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)	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 (dual-SIM model only)	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 2100
4G Network
LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)	LTE	LTE (unspecified)
Messaging

Build Features
- Fingerprint Sensor	- Fingerprint Sensor	-

OS
Android 9.0 (Pie)	Android 10.0	Android 10
User Interface
-	MIUI 12	-
Processor
Octa-core (2x1.8 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53), Exynos 7885 Octa (14 nm)	, MediaTek Helio G35	Octa-core 1.8 GHz Cortex-A53, Qualcomm SM4250 Snapdragon 450 (11 nm)
GPU
Mali-G71	Mali-G31	Adreno 506
RAM
4 GB	3 GB	3 GB
Internal Memory
64 GB	64 GB	32 GB
External Memory
microSD, up to 512 GB (dedicated slot)	microSDXC (dedicated slot)	microSDXC

Type
Super AMOLED Capacitive Touchscreen	IPS LCD Capacitive Touchscreen	HD+ TFT Display
Colors
16M colors	16M colors	16M Colour
Size
5.9 inches	6.53 inches	6.5 inches
Resolution
1080 x 2280 pixels (428 ppi)	720 x 1600 pixels (269 ppi)	720 x 1520 pixels (259 ppi)
Screen-to-Body Ratio
86.97%	-	-
Multi-Touch

Rear Camera
16 MP + 5 MP	13 MP + 5 MP + 2 MP	13 MP + 2 MP + 2 MP
Flash
LED Flash	LED Flash	LED Flash
Features
16 MP, f/2.0, PDAF 5 MP, f/2.2, 12mm, (ultrawide) Panorama, HDR	13 MP, f/1.8, (wide), 1/3.1", 1.12µm, PDAF 5 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, Panorama	13 MP, (wide), AF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth)
Video
2160p@30fps, 1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
25 MP, 1080p@30fps	5 MP HDR 1080p@30fps	5 MP, f/2.2

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat12 600/150 Mbps	HSPA 42.2/5.76 Mbps, LTE-A	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Bluetooth
4.2, A2DP, LE	5.0, A2DP, LE	Yes
Wi-Fi
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	Yes
USB
Type-C 1.0 reversible connector	2.0, Type-C 1.0 reversible connector, USB On-The-Go	microUSB 2.0
GPS
Yes, with A-GPS, GLONASS, BDS	Yes, with A-GPS	Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser
Yes	Yes	Yes

Internal
64 GB, 4 GB RAM	64 GB, 3 GB RAM	32 GB, 3 GB RAM
Expandable Storage
microSD, up to 512 GB (dedicated slot)	microSDXC (dedicated slot)	microSDXC
USB OTG
Supported	Supported	Not Supported

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

NFC

Type
Non-removable Li-Po Battery	Non-removable Li-Po Battery	Non-removable Li-Po Battery Fast battery charging 15W
Capacity
3100 mAh	5000 mAh	5000 mAh
Stand by
-	-	-
Talk Time
-	-	-