Side-by-side technical data
Realme C21 vs vivo Y12a
Comparison between Realme C21 and vivo Y12a: camera, battery, fast charging, display, performance and colors, side by side. More phones from Realme and vivo.
The verdict
Your pick: Realme C21, ahead on Connectivity.
| Category | C21 | Y12a |
|---|---|---|
| Design & display | 4.6 | 4.8 |
| Performance & hardware | 2.5 | 2.5 |
| Camera | 3.0 | 3.0 |
| Connectivity | 4.9 | 4.6 |
| Battery & charging | 5.8 | 5.8 |
Which one is for you?
Realme C21, if you care about…
- RAM Capacity
- 4 GB
- against 3 GB
- Bluetooth Version
- Bluetooth 5.0
- against Bluetooth 4.2
- Maximum Storage Capacity
- 64 GB
- against 32 GB
- RAM Type
- LPDDR4X
- against DDR3
vivo Y12a, if you care about…
- Body Thickness
- 8.4 mm
- against 8.9 mm
- Geekbench 6 Single-Core
- 199
- against 189
- OS Version
- 11
- against 10
- Max. download speed
- 150 Mbps
- against 42.2 Mbps
Specification comparison
Performance
| Specification | C21 | Y12a |
|---|---|---|
| Processor Model | MediaTek Helio G35 | Qualcomm Snapdragon 439 |
| Processor Process Size | 12 nm | 12 nm |
| Graphics GPU | PowerVR GE8320 | Qualcomm Adreno 505 |
| Storage Type | eMMC 5.1 | eMMC 5.1 |
| Maximum CPU Clock | 2.3 GHz Best value | 1.95 GHz |
| Maximum Storage Capacity | 64 GB Best value | 32 GB |
| AnTuTu Score | 110,490 | — |
| Geekbench 6 Single-Core | 189 | 199 Best value |
| Geekbench 6 Multi-Core | 810 Best value | 795 |
| CPU Description | Octa-core processor with four Cortex-A53 cores at 2.3 GHz and four Cortex-A53 cores at 1.8 GHz. | Octa-core CPU with four Cortex-A53 cores at 1.95 GHz and four Cortex-A53 cores at 1.45 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 4 GB Best value | 3 GB |
| RAM Type | LPDDR4X Best value | DDR3 |
| Expandable Storage | Yes | Yes |
| AnTuTu version | v8 | — |
Design
| Specification | C21 | Y12a |
|---|---|---|
| Body Colors | Black, Blue | Black, Blue |
| Body Thickness | 8.9 mm | 8.4 mm Best value |
| Body Width | 76.4 mm | 76.3 mm |
| Body Height | 165.2 mm | 164.4 mm |
| Weight | 190 g Best value | 191 g |
| Usable Surface | 80.8 % | 81.6 % Best value |
| Body Materials | Glass, Plastic | Glass, Plastic |
Battery
| Specification | C21 | Y12a |
|---|---|---|
| Battery Capacity | 5,000 mAh | 5,000 mAh |
| Battery Type | Lithium | — |
| Fast Charge Power | 10 W | 10 W |
| Battery Features | Fast Charging, Reverse Charging, Non-Removable, Rechargeable, Battery Level Indicator | Fast Charging, Reverse Charging, Battery Level Indicator, Rechargeable |
Display
| Specification | C21 | Y12a |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | IPS LCD | IPS LCD |
| Peak Display Brightness | 400 nits | — |
| Display Diagonal | 6.5″ | 6.51″ Best value |
| 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 | — |
| Touch Sampling Rate | 120 Hz | — |
| Display Contrast Ratio | 1,500 :1 | — |
| Display Features | IPS LCD, Water Drop Notch, TÜV Rheinland Eye Comfort Certification, Scratch Resistant, Curved Glass, Capacitive Touch, Multi-Touch, Frameless, Touchscreen | IPS LCD, Touchscreen |
Sensors
| Specification | C21 | Y12a |
|---|---|---|
| Fingerprint Sensor Placement | Rear | Side |
Sensor
| Specification | C21 | Y12a |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass, Gravity Sensor, Light Sensor | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass |
Software
| Specification | C21 | Y12a |
|---|---|---|
| Operating System | Android 10 | Android 11 |
| OS Family | Android | Android |
| OS Version | 10 | 11 Best value |
| Google Services | Yes | — |
Connectivity
| Specification | C21 | Y12a |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby, Dual SIM | Dual Nano-SIM |
| 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 B850, 3G UMTS B900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B20, 4G LTE B28A, 4G LTE B28B, 4G LTE B38, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B5, 3G UMTS B8, 3G UMTS B1, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B38, 4G LTE B40, 4G LTE B41 |
| Cellular Technologies | GSM, HSPA, UMTS, LTE, 4G | GSM, HSPA, LTE, 4G |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 802.11a/b/g/n/ac |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi 802.11 b/g/n | Dual Band, Wi-Fi Direct |
| Bluetooth Version | Bluetooth 5.0 Best value | Bluetooth 4.2 |
| Bluetooth Profiles | A2DP, LE, EDR | A2DP |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo Best value | GPS, GLONASS, Galileo, BeiDou |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, Computer Sync, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage, USB OTG | 3.5 mm Audio Jack, FM Radio, microUSB, USB OTG, USB Type-C |
| USB Version | USB 2.0 | microUSB |
| SAR (EU) head | 0.74 W/kg | — |
| SAR (EU) body | 1.151 W/kg | — |
| Max. download speed | 42.2 Mbps | 150 Mbps Best value |
| Max. upload speed | 5.76 Mbps | 75 Mbps Best value |
Audio
| Specification | C21 | Y12a |
|---|---|---|
| Microphone Count | 1 | — |
| Audio Features | A2DP, LE, EDR, Loudspeaker | A2DP, Loudspeaker |
Technical
| Specification | C21 | Y12a |
|---|---|---|
| Model numbers | RMX3201 | V2102 |
