Phone Comparison - Xiaomi Mi Mix 3 5G vs Samsung Galaxy S21 5G vs Xiaomi Poco X3 Pro

general General Info

Manufacturer Xiaomi Samsung Xiaomi
Announced February 2019 2021, January 14 March 2021
Status Coming Soon - May 2019 Coming soon. Exp. release 2021, January 29 Coming Soon - March 2021
Price - Rs. 69,999 ($799.99) [Similarly Priced] -
Colors Sapphire Blue, Onyx Black Phantom Gray, Phantom White, Phantom Violet, Phantom Pink Phantom Black, Frost Blue, Metal Bronze
Form Factor Candybar Candybar Candybar
Dimension 157.9 x 74.7 x 9.4 mm
(6.22 x 2.94 x 0.37 in)
151.7 x 71.2 x 7.9 mm
(5.97 x 2.8 x 0.31 in)
165.3 x 76.8 x 9.4 mm
(6.51 x 3.02 x 0.37 in)
Weight - 169 g (5.96 oz) 215 g (7.58 oz)
SIM Type Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM and/or eSIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) Hybrid Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA2000 1xEV-DO
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)
CDMA2000 1xEV-DO
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) LTE 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
5G Network - SA/NSA/Sub6/mmWave -
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor (under display, ultrasonic)
Samsung Pay (Visa, MasterCard certified)
IP68 dust/water resistant (up to 1.5m for 30 mins)
Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+
- Fingerprint Sensor (side-mounted)
IP53, dust and splash protection

hardware Hardware and OS

OS Android 9.0 (Pie) Android 11 Android 11
User Interface MIUI 10 One UI 3.1 MIUI 12 for POCO
Processor Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485), Qualcomm SDM855 Snapdragon 855 (7 nm) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International / Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea, Exynos 2100 - International / Qualcomm Snapdragon 888 - USA/China/Korea Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver), Qualcomm Snapdragon 860 (7 nm)
GPU Adreno 640 Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea Adreno 640
RAM 6 GB 8 GB 8 GB
Internal Memory 64/128 GB 256 GB 256 GB
External Memory No microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)

display Display

Type Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 FHD+ Dynamic AMOLED 2X Display
120Hz Refresh Rate
HDR10+
1300 nits (peak)
Corning Gorilla Glass Victus
Always-on display
IPS LCD Screen
120Hz Refresh Rate
HDR10
450 nits (typ)
Corning Gorilla Glass 6
Colors 16M colors 16M Colour 16M Colour
Size 6.39 inches 6.2 inches 6.67 inches
Resolution 1080 x 2340 (403 ppi) 1080 x 2400 pixels (424 ppi) 1080 x 2400 pixels (395 ppi)
Screen-to-Body Ratio 85.11% 86.12% 84.43%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack no no yes
Radio No FM radio (Snapdragon model only; market/operator dependent) Unspecified
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes

camera Camera

Rear Camera 12 MP + 12 MP 12 MP + 64 MP + 12 MP 48 MP + 8 MP + 2 MP + 2 MP
Flash LED Flash LED Flash Dual-LED flash
Features 12 MP (wide), f/1.8, 1/2.55", 1.4µm, Dual Pixel PDAF, 4-axis OIS
12 MP (telephoto), 1/3.4", 1.0µm
HDR, Panorama
12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS
64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom
12 MP, f/2.2, 13mm (ultrawide), 1.4µm, Super Steady video
Auto-HDR, Panorama
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 119˚ (ultrawide)
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)
HDR, panorama
Video 2160p@30/60fps, 1080p@30/60fps, 1080p@960fps 8K@24/30fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS 4K@30fps, 1080p@30/60fps, gyro-EIS
Front Camera Mechanical pop-up 24 MP, 1/2.8", 0.9µm
Mechanical pop-up 2 MP, depth sensor
LED flash, HDR, 1080p@30fps [Similar]
10 MP, f/2.2, 26mm (wide), 1/3.2", 1.22µm, Dual Pixel PDAF, Dual video call, Auto-HDR, 4K@30/60fps, 1080p@30fps [Similar] 20 MP, f/2.2, (wide), 1/3.4", 0.8µm
HDR, panorama
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth 5.0, A2DP, aptX HD, LE 5.0, A2DP, LE 5.0, A2DP, LE
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/6, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB Type-C 1.0 reversible connector USB Type-C 3.2, USB On-The-Go USB Type-C 2.0, USB On-The-Go
GPS Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS Yes, with A-GPS, GLONASS, BDS, GALILEO Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser Yes Yes Yes

memory User Memory

Internal 64/128 GB, 6 GB RAM 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1 256 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 3.1
Expandable Storage No microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
USB OTG Supported 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 not present barometer sensor present barometer sensor not present
NFC NFC supported NFC supported NFC supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Power bank/Reverse wireless charging 4.5W
Non-removable Li-Po Battery
Fast battery charging 33W, 59% in 30 min, 100% in 59 min (advertised)
Capacity 3800 mAh 4000 mAh 5160 mAh
Stand by - - -
Talk Time - - -