Realme XT vs Mi A3 vs Redmi K20
Key Feature Comparison
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At a Glance
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Octa core (2.3 GHz, Dual core, Kryo 360 + 1.7 GHz, Hexa Core, Kryo 360)
Octa core (2 GHz, Quad core, Kryo 260 + 1.8 GHz, Quad core, Kryo 260)
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
4000 mAh
4030 mAh
4000 mAh
6.4 inches
6.08 inches
6.39 inches
Quad, 64MP + 8MP + 2MP + 2MP
Triple, 48MP + 8MP + 2MP
Triple, 48MP + 13MP + 8MP
4G
4G
4G
Detailed Specs
Screen Size
6.4 inches
6.08 inches
6.39 inches
Screen Type
Super AMOLED
Super AMOLED
AMOLED
Screen Resolution
1080 x 2340 pixels
720 x 1560 pixels
1080 x 2340 pixels
Pixel Density
403 ppi
283 ppi
403 ppi
Aspect Ratio
19.5:9
19.5:9
19.5:9
Screen Protection
Gorilla Glass 5
Gorilla Glass 5
Gorilla Glass 5
Screen to Body Ratio
91.90%
82.15%
91.90%
Screen Design
Waterdrop notch
Waterdrop notch
Bezel-less
Screen Quality
FHD
-
FHD
Phone Variants
6GB 64GB, 4GB 64GB, 8GB 128GB
4GB 64GB, 6GB 128GB
6GB 128GB, 6GB 64GB
Expandable Storage
Yes
Yes
No
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Storage Type
UFS 2.1
UFS 2.1
UFS 2.1
Expandable Storage Capacity
Yes, 256 GB
Yes, 256 GB
-
OTG Support
Yes
Yes
Yes
Sensors
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Operating System
Android v9.0 (Pie)
Android v9.0 (Pie)
Android v9.0 (Pie)
GPU
Adreno 616
Adreno 610
Adreno 618
Chipset
Qualcomm Snapdragon 712
Qualcomm Snapdragon 665
Qualcomm Snapdragon 730
CPU
Octa core (2.3 GHz, Dual core, Kryo 360 + 1.7 GHz, Hexa Core, Kryo 360)
Octa core (2 GHz, Quad core, Kryo 260 + 1.8 GHz, Quad core, Kryo 260)
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Custom User Interface
Realme UI
Android One
MIUI
Clock Speed
2.3 GHz
2 GHz
2.2 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
10 nm
11 nm
8 nm
Battery Capacity
4000 mAh
4030 mAh
4000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-Polymer
Charger Type
VOOC, v3.0, 20W
Quick, v3.0, 18W
Quick, v3.0, 18W
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Charging Time
52 % in 30 minutes
-
-
Announced On
5-Sep-19
5-Jul-19
5-May-19
Market Status
Available
Available
Available
Brand
Realme
Xiaomi
Xiaomi
Model Number
RMX1921
MZB7975IN
MZB7756IN
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 16,999
Rs. 13,499
Rs. 19,450
GPS
Yes A-GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
Active noise cancellation with dedicated mic
24-bit/192kHz audioActive noise cancellation with dedicated mic
NFC
No
No
Yes
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
FM Radio
Yes
Yes
-
3.5mm Audio Jack
Yes
Yes
Yes
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano (Hybrid)
SIM1: Nano, SIM2: Nano
Wi-Fi
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/ac/b/g/n
Yes, Wi-Fi 802.11, ac/b/g/n, MIMO
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
3.5 mm
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM, Dual VoLTE
eSIM
No
No
No
Wi-Fi Features
Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
VoLTE
Yes
Yes
Yes
SIM 1 Bands
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 ...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
SIM 2 Bands
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 /...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDG...
Water Resistance
Yes, Splash proof
Yes, Splash proof
-
Weight
183 grams
173.8 grams
191 grams
Colors
Pearl Blue, Pearl White
More than White, Not just Blue, Kind of Grey
Carbon Black, Flame Red, Glacier Blue, Pearl White
Build
Back: Gorilla Glass
Back: Mineral Glass
Back: Gorilla Glass
Dimensions
158.7 x 75.2 x 8.6 mm
153.4 x 71.85 x 8.4 mm
156.7 x 74.3 x 8.8 mm
SAR Value
-
Head: 0.527 W/kg, Body: 0.722 W/kg
Head: 1.07 W/kg, Body: 0.723 W/kg
Front Video Recording
1920x1080 @ 30 fps
1920x1080 @ 30 fps, 1280x720 @ 30 fps
1920x1080 @ 30 fps, 1280x720 @ 30 fps
Front Camera Features
HDR, panorama
Fixed Focus
HDR
Front Camera Setup
Single, 16MP
Single, 32MP
Single, 20MP
Front Camera 1 Resolution
16 MP
32 MP
20 MP
Front Camera 1 Type
f/2.0, Wide Angle Primary Camera
f/2.0 Primary Camera
f/2.2 Primary Camera
Front Sensor
Exmor RS
-
-
Front Aperture
f/2.0
f/2.0
f/2.2
Front Camera 1 Lens
-
26 mm focal length, 2.8" sensor size, 1.6 micrometre pixel size
0.8 micrometre pixel size
OIS
No
No
-
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, Dual LED Flash
Rear Video Recording
3840x2160 @ 30 fps, 1920x1080 @ 60 fps
3840x2160 @ 30 fps, 1920x1080 @ 60 fps
3840x2160 @ 30 fps, 1920x1080 @ 60 fps, 1280x720 @ 120 fps
Rear Camera Features
5 x Digital Zoom, Auto Flash, Face detection, Touch to focus
2 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Quad, 64MP + 8MP + 2MP + 2MP
Triple, 48MP + 8MP + 2MP
Triple, 48MP + 13MP + 8MP
Rear Camera 1 Resolution
64 MP
48 MP
48 MP
Rear Camera 1 Type
f/1.8 (upto 5x Digital Zoom) Primary Camera
f/1.79 (upto 2x Digital Zoom) Primary Camera
f/1.75 Primary Camera
Rear Camera 1 Lens
5.58 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
2" sensor size, 0.8 micrometre pixel size
Rear Camera 2 Resolution
8 MP
8 MP
13 MP
Rear Camera 2 Type
f/2.25, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.4, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 2 Lens
1.66 mm focal length, 1.12 micrometre pixel size
13 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
3" sensor size, 1.12 micrometre pixel size
Rear Camera 3 Resolution
2 MP
2 MP
8 MP
Rear Camera 3 Type
f/2.4, Macro Camera
f/2.4, Depth Camera
f/2.4 Telephoto (upto 10x Digital Zoom, upto 2x Optical Zoom) Camera
Rear Camera 3 Lens
1.77 mm focal length, 1.75 micrometre pixel size
-
4.0" sensor size, 1.12 micrometre pixel size
Rear Camera 4 Resolution
2 MP
-
-
Rear Camera 4 Type
f/2.4, Depth Camera
-
-
Rear Camera 4 Lens
1.77 mm focal length, 1.75 micrometre pixel size
-
-
Rear Sensor
ISOCELL Plus
Exmor-RS CMOS Sensor
Exmor-RS CMOS Sensor
Rear Aperture
f/1.8
f/1.79
f/1.75
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
On-Screen
On-Screen
On-Screen
Fingerprint Scanner Type
Optical
Optical
Optical
Face Unlock
Yes
Yes
Yes