Xiaomi Redmi 9 vs Samsung Galaxy A21s

Phones Images
PHONES
Phone Names Xiaomi Redmi 9 Samsung Galaxy A21s
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 411, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
Launch
Announced2020, June 102020, May 15. Released 2020, June 02
StatusAvailable. Released 2020, June 10Discontinued
Body
BuildGlass front (Gorilla Glass 3), plastic back, plastic frameGlass front, plastic frame, plastic back
Dimensions163.3 x 77 x 9.1 mm (6.43 x 3.03 x 0.36 in)163.7 x 75.3 x 8.9 mm (6.44 x 2.96 x 0.35 in)
SIMNano-SIM + Nano-SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight198 g (6.98 oz)192 g (6.77 oz)
Display
ProtectionCorning Gorilla Glass 3-
Resolution1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Size6.53 inches, 104.7 cm2 (~83.2% screen-to-body ratio)6.5 inches, 102.0 cm2 (~82.8% screen-to-body ratio)
TypeIPS LCD, 400 nits (typ)PLS LCD
Platform
CPUOcta-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55)
ChipsetMediatek MT6769V/CU Helio G80 (12 nm)Exynos 850 (8 nm)
GPUMali-G52 MC2Mali-G52
OSAndroid 10, upgradable to Android 12, MIUI 13Android 10, upgradable to Android 12, One UI 4.1
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal32GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM32GB 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 3GB RAM, 64GB 4GB RAM, 64GB 6GB RAM, 128GB 2GB RAM, 128GB 3GB RAM, 128GB 4/6GB RAM
 eMMC 5.1eMMC 5.1
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, panorama, HDR
Quad13 MP, f/2.2, 28mm (wide), 1/3.1", 1.12µm, PDAF 8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm 5 MP (macro) Auxiliary lens48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro) Auxiliary lens
Video1080p@30fps1080p@30fps
Selfie camera
FeaturesHDR-
Single8 MP, f/2.0, 27mm (wide), 1/4.0", 1.12µm13 MP, f/2.2, (wide), 1/3.1", 1.12µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
Infrared portYes-
NFCYes (market/region dependent)Yes (market/region dependent)
PositioningGPS, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioWireless FM radio (no wired headphones required)FM radio, RDS, recording
USBUSB Type-C 2.0, OTGUSB Type-C 2.0
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (rear-mounted), accelerometer, proximity, compassFingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Battery
Charging18W wired15W wired
TypeLi-Po 5020 mAhLi-Po 5000 mAh
Misc
ColorsCarbon Gray, Sunset Purple, Ocean Green, Pink/BlueBlack, White, Blue, Red
ModelsM2004J19G, M2004J19CSM-A217F, SM-A217F/DS, SM-A217F/DSN, SM-A217M, SM-A217M/DS, SM-A217N
Price$ 105.77 / £ 196.62 / € 115.51About 220 EUR
SAR0.91 W/kg (head)     1.00 W/kg (body)-
SAR EU0.71 W/kg (head)     1.06 W/kg (body)0.42 W/kg (head)     1.54 W/kg (body)
Tests
Battery lifeEndurance rating 131hEndurance rating 119h
Camera Photo / Video Photo / Video
Display Contrast ratio: 1624:1 (nominal) Contrast ratio: 1287:1 (nominal)
Loudspeaker -26.9 LUFS (Good) -30.0 LUFS (Average)
Performance AnTuTu: 201829 (v8) GeekBench: 1325 (v5.1) AnTuTu: 107157 (v8) GeekBench: 1100 (v5.1) GFXBench: 11fps (ES 3.1 onscreen)
OUR TESTS
Battery (old)Endurance rating 131hEndurance rating 119h
CameraPhoto / VideoPhoto / Video
Display1624:1 contrast ratio, 328 nits max brightness (measured)1287:1 contrast ratio, 490 nits max brightness (measured)
Loudspeaker-26.9 LUFS (Good)-30.0 LUFS (Average)
PerformanceAnTuTu: 201829 (v8) GeekBench: 1325 (v5.1)AnTuTu: 107157 (v8) GeekBench: 1100 (v5.1) GFXBench: 11fps (ES 3.1 onscreen)