Side-by-side technical data
Realme C21Y vs Realme C20
Comparison between Realme C21Y and Realme C20: camera, battery, fast charging, display, performance and colors, side by side. More phones from Realme.
The verdict
Your pick: Realme C20, ahead on Design & display and Connectivity. Unless Camera decides it for you.
| Category | C21Y | C20 |
|---|---|---|
| Design & display | 4.4 | 5.1 |
| Performance & hardware | 2.3 | 2.3 |
| Camera | 3.0 | 2.2 |
| Connectivity | 4.3 | 4.8 |
| Battery & charging | 5.8 | 5.8 |
Which one is for you?
Realme C21Y, if you care about…
- AnTuTu Score
- 196,316
- against 110,490
- RAM Capacity
- 4 GB
- against 2 GB
- Maximum Storage Capacity
- 64 GB
- against 32 GB
- OS Version
- 11
- against 10
Realme C20, if you care about…
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
- against Wi-Fi 4 (802.11n), Wi-Fi 802.11 b/g/n
- Bluetooth Version
- Bluetooth 5.1
- against Bluetooth 5.0
- Peak Display Brightness
- 800 nits
- against 400 nits
- Weight
- 190 g
- against 200 g
Specification comparison
Performance
| Specification | C21Y | C20 |
|---|---|---|
| Processor Model | Unisoc T610 | MediaTek Helio G35 |
| Processor Process Size | 12 nm | 12 nm |
| Graphics GPU | Mali-G52 MP2 | PowerVR GE8320 |
| Storage Type | eMMC 5.1 | eMMC 5.1 |
| Maximum CPU Clock | 1.8 GHz | 2.3 GHz Best value |
| Maximum Storage Capacity | 64 GB Best value | 32 GB |
| AnTuTu Score | 196,316 Best value | 110,490 |
| Geekbench 6 Single-Core | — | 189 |
| Geekbench 6 Multi-Core | — | 810 |
| CPU Description | Octa-core CPU with 2 Cortex-A75 cores and 6 Cortex-A55 cores, all at 1.8 GHz. | Octa-core CPU with four Cortex-A53 cores at 2.3 GHz and four Cortex-A53 cores at 1.8 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 4 GB Best value | 2 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Expandable Storage | Yes | Yes |
| AnTuTu version | v9 | v8 |
Design
| Specification | C21Y | C20 |
|---|---|---|
| Body Colors | Black, Blue, Cyan | Grey, Blue, Black |
| Body Thickness | 9.1 mm | 8.9 mm Best value |
| Body Width | 76 mm | 76.4 mm |
| Body Height | 164.5 mm | 165.2 mm |
| Weight | 200 g | 190 g Best value |
| Usable Surface | 81.6 % Best value | 80.8 % |
| Body Materials | Glass, Plastic | Glass, Plastic |
| Resistance Features | — | Splash Resistant |
Battery
| Specification | C21Y | C20 |
|---|---|---|
| Battery Capacity | 5,000 mAh | 5,000 mAh |
| Battery Type | Li-Polymer | Lithium |
| Fast Charge Power | 10 W | 10 W |
| Battery Features | Reverse Charging, Fast Charging, Non-Removable, Battery Level Indicator, Rechargeable | Fast Charging, Reverse Charging, Non-Removable, Battery Level Indicator, Rechargeable |
Display
| Specification | C21Y | C20 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | IPS LCD | IPS LCD |
| Peak Display Brightness | 400 nits | 800 nits Best value |
| Display Diagonal | 6.5″ | 6.5″ |
| Display Horizontal Resolution | 720 px | 720 px |
| Display Vertical Resolution | 1,600 px | 1,600 px |
| Display Pixel Density | 270 ppi | 270 ppi |
| Display Refresh Rate | 60 Hz | 60 Hz |
| Touch Sampling Rate | — | 120 Hz |
| Display Contrast Ratio | — | 1,500 :1 |
| Display Features | Water Drop Notch, Curved Glass, Capacitive Touch, Multi-Touch, TÜV Rheinland Eye Comfort Certification | Gorilla Glass 3, Water Drop Notch, Capacitive Touch, Multi-Touch, Scratch Resistant, Frameless |
Sensors
| Specification | C21Y | C20 |
|---|---|---|
| Fingerprint Sensor Placement | Rear | — |
Sensor
| Specification | C21Y | C20 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass, Light Sensor | Accelerometer, Proximity Sensor, Compass, Gravity Sensor, Light Sensor |
Software
| Specification | C21Y | C20 |
|---|---|---|
| Operating System | Android 11 | Android 10 |
| OS Family | Android | Android |
| OS Version | 11 Best value | 10 |
| Google Services | Yes | Yes |
Connectivity
| Specification | C21Y | C20 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby, Dual SIM | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B5, 3G UMTS B8, 3G UMTS B2, 3G UMTS B3, 3G UMTS B7, 3G UMTS B28A, 3G UMTS B38, 3G UMTS B40, 3G UMTS B41, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B28A, 4G LTE B38, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B38, 4G LTE B40, 4G LTE B41 |
| Cellular Technologies | GSM, HSPA, UMTS, LTE, 4G | GSM, HSPA, UMTS, LTE, 4G |
| Wi-Fi Standards | Wi-Fi 4 (802.11n), Wi-Fi 802.11 b/g/n | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) Best value |
| Wi-Fi Features | Wi-Fi 802.11 b/g/n, Wi-Fi Hotspot | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi 802.11a/b/g/n/ac |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.1 Best value |
| Bluetooth Profiles | A2DP, LE, EDR | A2DP, LE |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo Best value | GPS, A-GPS, GLONASS, BeiDou |
| Connectivity Features | 3.5 mm Audio Jack, microUSB, USB Charging, USB OTG, USB Mass Storage, Computer Sync, OTA Sync, FM Radio, Tethering, VoLTE | 3.5 mm Audio Jack, FM Radio, microUSB, USB 2.0, USB OTG, USB Mass Storage, Computer Sync, OTA Sync, Tethering, VoLTE, USB Charging |
| USB Version | microUSB | USB 2.0 |
| SAR American Head | — | 0.98 W/kg |
| SAR American Body | — | 0.5 W/kg |
| Max. download speed | 300 Mbps Best value | 42.2 Mbps |
| Max. upload speed | 100 Mbps Best value | 5.76 Mbps |
Audio
| Specification | C21Y | C20 |
|---|---|---|
| Microphone Count | — | 1 |
| Audio Features | A2DP, LE, Stereo Speakers, EDR Best value | A2DP, LE, Loudspeaker |
Technical
| Specification | C21Y | C20 |
|---|---|---|
| Model numbers | RMX3261, RMX3263 | RMX3063, RMX3061 |
