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Compare 3 products

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realme C21 Mobile Phone
realme C21
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Xiaomi Redmi 9T Mobile Phone
Xiaomi Redmi 9T
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Xiaomi Redmi Note 9 Mobile Phone
Xiaomi Redmi Note 9
Editiorial reviews
5
5 editorial reviews
The realme C21 (Optus locked) is a $199 4G smartphone offering terrific features for the price. It is even better with the $30 Optus credit.Read more
As smartphones become more specialized for certain functions like gaming, along comes the Realme C21, which focuses on basic uses.Read more
Smartphones can range anywhere between $100 to several thousands of dollars and of course, they greatly vary in terms of functionality and performance.Read more
Read editorial reviews
5
4.1 out of 5
4 user ratings
5 stars
25 %
4 stars
75 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
5
3.7 out of 5
3 user ratings
5 stars
0 %
4 stars
100 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
User rating
45
4.3 out of 5
45 user ratings
5 stars
44 %
4 stars
44 %
3 stars
11 %
2 stars
0 %
1 stars
0 %
37
4.3 out of 5
37 user ratings
5 stars
48 %
4 stars
32 %
3 stars
16 %
2 stars
2 %
1 stars
0 %
44
4.3 out of 5
44 user ratings
5 stars
52 %
4 stars
27 %
3 stars
20 %
2 stars
0 %
1 stars
0 %

Hardware

Operating systemAndroid 10Android 10Android 10
CPU clock speed2.3 GHz2.0 GHz2.0 GHz
CPU cores8-core8-core8-core
CPU modelMediaTek Helio G35Qualcomm Snapdragon 662MediaTek Helio G85
RAM memory
  • 3 GB
  • 4 GB
4 GB
  • 3 GB
  • 4 GB

Display

Screen size6.5 in6.53 in6.53 in
Panel typeLCDLCDLCD
Resolution1600 x 720 px2340 x 1080 px2340 x 1080 px
TechnologyLCDLCD
N/A
Pixel density
N/A
395.0 ppi
N/A
Screen material
N/A
N/A
Corning Gorilla Glass 5

Rear camera

Primary sensor resolution13.0 Mpx48.0 Mpx48.0 Mpx
Resolution (second camera)2.0 Mpx8.0 Mpx8.0 Mpx
Resolution (third camera)2.0 Mpx2.0 Mpx2.0 Mpx
Lens aperture (second camera)F/2.4F/2.2F/2.2
Lens aperture (third camera)F/2.4F/2.4F/2.4
Focus adjustmentAutomaticAutomaticAutomatic
Primary sensor size
N/A
1/2"1/2"
Resolution (fourth camera)
N/A
2.0 Mpx2.0 Mpx
Lens aperture (fourth camera)
N/A
F/2.4F/2.4
Field of View (FoV) (second camera)
N/A
120.0 °118.0 °
Sensor size (second camera)
N/A
N/A
1/4"
Primary Field of View (FoV)
N/A
N/A
79.4 °

Front camera

Primary resolution5.0 Mpx8.0 Mpx13.0 Mpx
Face detectionFace recognition
N/A
Face recognition
Lens apertureF/2.2F/2.05F/2.25
Primary sensor size
N/A
1/2"1/2"
Primary Field of View (FoV)
N/A
N/A
79.4 °
Light source
N/A
N/A
Display flash

Storage

Internal storage
  • 32 GB
  • 64 GB
  • 128 GB
  • 64 GB
  • 128 GB
  • 64 GB

Dimensions

Height6.5 in6.39 in6.39 in
Width3.01 in3.04 in3.04 in
Depth0.35 in0.38 in0.35 in
Weight6.7 oz6.98 oz7.02 oz

Connectivity

Sim card sizeNano SIMNano SIMNano SIM
Dual sim support
N/A
N/A
yes
Bluetooth
N/A
N/A
yes
Bluetooth version
N/A
N/A
5.0
Charging connection
N/A
N/A
USB
Headphone connection
N/A
N/A
3.5 mm
Type of USB connector
N/A
N/A
USB Type-C

Cellular

Data transmission
  • FDD-LTE
  • TDD-LTE
  • FDD-LTE
  • HSPA+
  • HSUPA
  • LTE
  • TDD-LTE
  • GPRS
  • EDGE
  • HSDPA
  • HSUPA
  • HSPA+
  • VoLTE
  • FDD-LTE
  • TDD-LTE
Navigation system
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo
UMTS frequences
  • 2100 MHz
  • 850 MHz
  • 900 MHz
  • 2100 MHz
  • 1900 MHz
  • 1700 MHz
  • 850 MHz
  • 900 MHz
  • 2100 MHz
  • 1900 MHz
  • 1700 MHz
  • 850 MHz
  • 900 MHz
GSM frequencies
N/A
N/A
  • 1900 MHz
  • 2100 MHz
  • 850 MHz
  • 900 MHz

Battery

Battery capacity5000.0 mAh6000.0 mAh5020.0 mAh
Talk time
N/A
56.0 h33.0 h
Battery type
N/A
N/A
Lithium Polymer

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