Side-by-side technical data
Xiaomi Redmi K40 Pro vs vivo S9
Comparison between Xiaomi Redmi K40 Pro and vivo S9: camera, battery, fast charging, display, performance and colors, side by side. More phones from Xiaomi and vivo.
The verdict
Neither runs away with it: each wins something.
| Category | Redmi K40 Pro | S9 |
|---|---|---|
| Design & display | 7.3 | 7.6 |
| Performance & hardware | 6.3 | 6.0 |
| Camera | 5.9 | 6.9 |
| Connectivity | 7.3 | 6.5 |
| Battery & charging | 4.9 | 4.7 |
Which one is for you?
Xiaomi Redmi K40 Pro, if you care about…
- Battery Capacity
- 4,520 mAh
- against 4,000 mAh
- AnTuTu Score
- 903,172
- against 733,600
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E
- against Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
- Display Refresh Rate
- 120 Hz
- against 90 Hz
vivo S9, if you care about…
- Display Pixel Density
- 409 ppi
- against 395 ppi
- Weight
- 173 g
- against 196 g
- Battery Features
- Fast Charging, Non-Removable, Reverse Charging, Rechargeable, Battery Level Indicator
- against Non-Removable, Fast Charging, Rechargeable, Battery Level Indicator
- Body Thickness
- 7.4 mm
- against 7.8 mm
Specification comparison
Performance
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 888 | MediaTek Dimensity 1100 |
| Processor Process Size | 5 nm Best value | 6 nm |
| Graphics GPU | Qualcomm Adreno 660 | Mali-G77 MC9 |
| Storage Type | UFS 3.1 | UFS 3.1 |
| Maximum CPU Clock | 2.84 GHz Best value | 2.6 GHz |
| Maximum Storage Capacity | 256 GB | 256 GB |
| AnTuTu Score | 903,172 Best value | 733,600 |
| Geekbench 6 Single-Core | 1,002 | — |
| Geekbench 6 Multi-Core | 3,014 | — |
| CPU Description | Octa-core processor with 1 Cortex-X1 core at 2.84 GHz, 3 Cortex-A78 cores at 2.42 GHz, and 4 Cortex-A55 cores at 1.80 GHz. | Octa-core CPU with four Cortex-A78 cores at 2.6 GHz and four Cortex-A55 cores at 2.0 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 12 GB | 12 GB |
| RAM Type | LPDDR5 Best value | LPDDR4X |
| AnTuTu version | v10 | v10 |
Design
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Body Colors | Black, White, Aurora | Black, White, Blue, Turquoise |
| Body Thickness | 7.8 mm | 7.4 mm Best value |
| Body Width | 76.4 mm | 73.9 mm |
| Body Height | 163.7 mm | 158.4 mm |
| Weight | 196 g | 173 g Best value |
| Usable Surface | 85.9 % Best value | 85.5 % |
| Body Materials | Plastic, Glass | Glass, Aluminium Alloy Best value |
| Resistance Features | IP53 | — |
Battery
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Battery Capacity | 4,520 mAh Best value | 4,000 mAh |
| Battery Type | Li-Polymer | Lithium |
| Fast Charge Power | 33 W | 33 W |
| Battery Features | Non-Removable, Fast Charging, Rechargeable, Battery Level Indicator | Fast Charging, Non-Removable, Reverse Charging, Rechargeable, Battery Level Indicator Best value |
Display
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | Super AMOLED | AMOLED |
| Peak Display Brightness | 1,300 nits | — |
| Display Diagonal | 6.67″ Best value | 6.44″ |
| Display Horizontal Resolution | 1,080 px | 1,080 px |
| Display Vertical Resolution | 2,400 px | 2,400 px |
| Display Pixel Density | 395 ppi | 409 ppi Best value |
| Display Refresh Rate | 120 Hz Best value | 90 Hz |
| Touch Sampling Rate | 360 Hz | — |
| Display Contrast Ratio | 5,000,000 :1 Best value | 3,000,000 :1 |
| Display Features | Hole-Punch Notch, HDR10+, Gorilla Glass 5, DCI-P3, Capacitive Touch, Multi-Touch, Frameless, Scratch Resistant | HDR10+, Curved Glass, Capacitive Touch, Multi-Touch, Scratch Resistant, Frameless, TÜV Rheinland Eye Comfort Certification |
Sensors
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Fingerprint Sensor Placement | Side | Under Display |
Sensor
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Sensor Features | Accelerometer, Gyroscope, Proximity Sensor, Compass, Barometer, Fingerprint Sensor, Light Sensor, RGB Sensor, Cooling System, Virtual Proximity Sensing | Fingerprint Sensor, Accelerometer, Compass, Gravity Sensor, Gyroscope, Light Sensor, Proximity Sensor |
Software
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Operating System | Android 11 | Android 11 |
| OS Family | Android | Android |
| OS Version | 11 | 11 |
| Widevine L1 | Yes | — |
Connectivity
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby, Dual SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B12, 4G LTE B17, 4G LTE B18, 4G LTE B19, 4G LTE B20, 4G LTE B26, 4G LTE B28A, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 5G NR n1, 5G NR n3, 5G NR n28a, 5G NR n41, 5G NR n77, 5G NR n78, 5G NR n79 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B3, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 3G UMTS 1700 AWS, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B8, 4G LTE B28A, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 5G NR n1, 5G NR n3, 5G NR n28a, 5G NR n41, 5G NR n77, 5G NR n78 |
| Cellular Technologies | GSM, CDMA, HSPA, CDMA2000, LTE, 5G | GSM, CDMA, HSPA, UMTS, CDMA2000, LTE, 5G |
| Wi-Fi Standards | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E Best value | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.2 | Bluetooth 5.2 |
| Bluetooth Profiles | A2DP, LE, aptX HD, aptX Adaptive Best value | A2DP, LE, aptX HD |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| Connectivity Features | Infrared, NFC, USB Type-C, USB OTG, USB Charging, USB Mass Storage, Computer Sync, OTA Sync, Tethering, VoLTE | NFC, USB Type-C, USB OTG, USB Charging, USB Mass Storage, Computer Sync, Tethering, VoLTE |
| USB Version | USB 2.0 | USB Type-C |
| Max. download speed | 7,500 Mbps Best value | 4,700 Mbps |
| Max. upload speed | 3,000 Mbps Best value | 2,500 Mbps |
Audio
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Microphone Count | 2 | 2 |
| Audio Features | Stereo Speakers, Dolby Atmos, Hi-Res Audio, Snapdragon Sound, Two Microphones, A2DP, LE, aptX HD, aptX Adaptive Best value | A2DP, LE, aptX HD, Hi-Res Audio, Loudspeaker, Two Microphones |
Technical
| Specification | Redmi K40 Pro | S9 |
|---|---|---|
| Model numbers | M2012K11C | V2072A |
