Realme X2 vs Vivo X21 vs Xiaomi Poco F1
Key Feature Comparison
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At a Glance
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Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Octa core (2.2 GHz, Quad core, Kryo 260 + 1.84 GHz, Quad core, Kryo 260)
Octa core (2.8 GHz, Quad core, Kryo 385 + 1.8 GHz, Quad core, Kryo 385)
4000 mAh
3200 mAh
4000 mAh
6.4 inches
6.28 inches
6.18 inches
Quad, 64MP + 8MP + 2MP + 2MP
Dual, 12MP + 5MP
Dual, 12MP + 5MP
4G
4G
4G
Detailed Specs
Screen Size
6.4 inches
6.28 inches
6.18 inches
Screen Type
Super AMOLED
Super AMOLED
IPS LCD
Screen Resolution
1080 x 2340 pixels
1080 x 2280 pixels
1080 x 2246 pixels
Pixel Density
403 ppi
402 ppi
403 ppi
Aspect Ratio
19.5:9
-
-
Screen Protection
Gorilla Glass 5
Gorilla Glass 3
Corning Gorilla Glass
Screen to Body Ratio
91.90%
84.93%
82.20%
Screen Design
Waterdrop notch
-
Regular notch
Screen Quality
FHD
FHD
FHD
Phone Variants
4GB 64GB, 8GB 256GB, 8GB 128GB, 6GB 128GB
6GB 128GB
6GB 64GB, 8GB 256GB, 6GB 128GB
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
-
LPDDR4X
Storage Type
UFS 2.1
-
UFS 2.1
Expandable Storage Capacity
Yes, 256 GB
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 v8.1 (Oreo)
Android v8.1 (Oreo)
GPU
Adreno 618
Adreno 512
Adreno 630
Chipset
Qualcomm Snapdragon 730G
Qualcomm Snapdragon 660
Qualcomm Snapdragon 845
CPU
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Octa core (2.2 GHz, Quad core, Kryo 260 + 1.84 GHz, Quad core, Kryo 260)
Octa core (2.8 GHz, Quad core, Kryo 385 + 1.8 GHz, Quad core, Kryo 385)
Custom User Interface
Realme UI
Funtouch OS
MIUI
Clock Speed
2.2 GHz
2.2 GHz
2.8 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
8 nm
-
10 nm
Battery Capacity
4000 mAh
3200 mAh
4000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-Polymer
Charger Type
VOOC, v4.0, 30W
Fast
Quick, v3.0
USB Type-C
Yes
No
Yes
Fast Charging
Yes
Yes
Yes
Charging Time
65 % in 30 minutes
-
-
Announced On
5-Sep-19
5-Mar-18
5-Aug-18
Market Status
Available
Available
Available
Brand
Realme
Vivo
POCO
Model Number
RMX1992
-
m1805e10a
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 17,999
Rs. 36,990
Rs. 17,999
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
32-bit/192kHz audioActive noise cancellation with dedicated mic
Active noise cancellation with dedicated mic
NFC
No
-
No
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
FM Radio
No
Yes
Yes
3.5mm Audio Jack
Yes
Yes
Yes
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano (Hybrid)
SIM1: Nano, SIM2: Nano (Hybrid)
Wi-Fi
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz, MIMO
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/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
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) / 700(band 28) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 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) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
SIM 2 Bands
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) / 700(band 28) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 /...
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 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) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
Front Video Recording
1920x1080 @ 30 fps
1080p30fps
1920x1080 @ 30 fps
Front Camera Features
HDR
-
HDR
Front Camera Setup
Single, 32MP
Single, 12MP
Single, 20MP
Front Camera 1 Resolution
32 MP
12 MP
20 MP
Front Camera 1 Type
f/2.0, Wide Angle Primary Camera
f/2.0 Primary Camera
f/2.0 Primary Camera
Front Camera 1 Lens
3.81 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
-
0.9 micrometre pixel size
Front Sensor
CMOS
CMOS
-
Front Aperture
f/2.0
f/2.0
f/2.0
Front Flash
-
Yes, Screen flash
Yes, Screen flash
Weight
182 grams
156.2 grams
182 grams
Colors
Pearl White, Pearl Blue, Pearl Green
Black
Graphite Black, Steel Blue, Rosso Red
Build
Back: Gorilla Glass
Front glass, aluminum body
Back: Polycarbonate
Dimensions
158.7 x 75.2 x 8.6 mm
154.4 x 74.7 x 7.3 mm
155.5 x 75.2 x 8.8 mm
SAR Value
Head: 1.160 W/kg, Body: 0.521 W/kg
Head: 1.180 W/kg, Body: 0.573 W/kg
Head: 0.719 W/kg, Body: 0.746 W/kg
OIS
No
-
No
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
3840x2160 @ 30 fps, 1920x1080 @ 60 fps
3840x2160 @ 30 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps
Rear Camera Features
5 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Digital Zoom, Auto Flash, Face detection, Touch to focus
Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Quad, 64MP + 8MP + 2MP + 2MP
Dual, 12MP + 5MP
Dual, 12MP + 5MP
Rear Camera 1 Resolution
64 MP
12 MP
12 MP
Rear Camera 1 Type
f/1.8 (upto 5x Digital Zoom) Primary Camera
f/1.8 Primary Camera
f/1.9 Primary Camera
Rear Camera 1 Lens
5.58 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
2.55" sensor size, 1.4 micrometre pixel size
2.55" sensor size, 1.4 micrometre pixel size
Rear Camera 2 Resolution
8 MP
5 MP
5 MP
Rear Camera 2 Type
f/2.25, Wide Angle, Ultra-Wide Angle Camera
f/2.4, Depth Camera
f/2.0, Depth Camera
Rear Camera 2 Lens
1.66 mm focal length, 1.12 micrometre pixel size
-
1.12 micrometre pixel size
Rear Camera 3 Resolution
2 MP
-
-
Rear Camera 3 Type
f/2.4, Macro Camera
-
-
Rear Camera 3 Lens
1.77 mm focal length, 1.75 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
ISO-CELL
Exmor-RS CMOS Sensor
Rear Aperture
f/1.8
f/1.8
f/1.9
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
On-Screen
On-Screen
Rear
Fingerprint Scanner Type
Optical
Optical
-
Face Unlock
Yes
Yes
Yes