OnePlus 9 has better RAM than Xiaomi Redmi K40. Both have the same amount of internal memory.
| Name | OnePlus 9 | Xiaomi Redmi K40 |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.55 in | 6.67 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 4500 mAh | 4520 mAh |
| Camera | 50 MP + 48 MP + 2 MP Triple | 48 MP + 8 MP + 5 MP Triple |
| Price | Rs. 22765 | Rs. 24490 |
The launch Date of the first phone is March 23, 2021 . The cost of OnePlus 9 is Rs. 22765. The launch Date of the second phone is February 25, 2021. The cost of Xiaomi Redmi K40 is Rs. 24490.
Xiaomi Redmi K40 has larger screen size of 6.67 inches in comparison to OnePlus 9's 6.55 inch screen. OnePlus 9 has Screen type where as Xiaomi Redmi K40 has Super AMOLED Screen type. OnePlus's phone has display density of 396 PPI & Xiaomi's phone has only 395 PPI display density. In terms of screen to body ratio, OnePlus's phone has better screen to body ratio of ~ 89.7% than Xiaomi's phone ~ 85.9%. OnePlus 9 has 20:9 aspect ratio where as Xiaomi Redmi K40 has 20:9 aspect ratio.
OnePlus 9's larger 8 GB RAM is better for playing games and all with respect to Xiaomi Redmi K40's lower 6 GB RAM. and both have same Internal Memory of 128 GB.
They both have the same 50 MP + 48 MP + 2 MP Triple Rear Camera. Xiaomi Redmi K40 will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to OnePlus 9's 16 MP Front Camera.
Both the phones run on Android Operating System Version 11.
| Name | OnePlus 9 | Xiaomi Redmi K40 |
| General | ||
| Model | 9 5G | Redmi K40 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | March 23, 2021 | February 25, 2021 |
| Design | ||
| Dimensions | 73.9 x 160 x 8.1 mm | 76.4 x 163.7 x 7.8 mm |
| Weight | 183 g | 196 g |
| Display | ||
| Type | Color Fluid AMOLED (16M Colors) | Color Super AMOLED Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.55 inches, 1080 x 2400 pixels, 120 Hz | 6.67 inches, 1080 x 2400 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 396 PPI | ~ 395 PPI |
| Screen to Body Ratio | ~ 89.7% | ~ 85.9% |
| Glass Type | Corning Gorilla Glass 6 | Corning Gorilla Glass 5 |
| Features | Reading Mode, Night Mode, Vibrant Color Effect, HDR | HDR10+ |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 8 GB | 6 GB |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS 3.1 | UFS 3.1 |
| Card Slot | No | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.2, A2DP, LE, aptX HD, LDAC, AAC | Yes, v5.1, A2DP, LE, aptX HD |
| USB | Yes, USB-C v3.1 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Extra | ||
| GPS | yes with A-GPS | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Electronic Compass, Gyroscope, Ambient Light Sensor, Proximity Sensor, Sensor Core, Flick-detect Sensor | Accelerometer, Gyro, Proximity, Compass |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Camera | ||
| Rear Camera | 48 MP ƒ/1.8 (Main) 50 MP ƒ/2.2 (Ultra Wide) 2 MP Monochrome | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro |
| OIS | Yes | |
| Auto Focus | Yes | Yes |
| Features | Co-Developed by Hasselblad, Nightscape, Super Macro, UltraShot HDR, Smart Scene Recognition, Portrait mode, Pro mode, Panorama | HDR, Panorama |
| Video Recording | 8K @ 30 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, Dual LED | Yes, LED |
| Front Camera | 16 MP ƒ/2.4 Punch Hole, Screen Flash | 20 MP (Wide Angle) Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD, 720p @ 120 fps HD |
| Technical | ||
| OS | Android v11, upgradable to v12 | Android v11 |
| Chipset | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 870 |
| CPU | 2.84 GHz, Octa Core Processor | 3.2 GHz, Octa Core Processor |
| Core Details | Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 | 1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585 |
| GPU | Adreno 660 | Adreno 650 |
| Java | No | No |
| Browser | Yes, supports HTML5 | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, AAC+, WMA, AMR-NB, AMR-WB, WAV, FLAC, APE, OGG, MID, M4A, IMY, AC3, EAC3, EAC3-JOC, AC4 | Yes |
| Video | MKV, MOV, MP4, H.265(HEVC), AVI, WMV, TS, 3GP, FLV, WEBM | Yes |
| FM Radio | Yes | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 4500 mAh, Li-Po Battery | 4520 mAh, Li-Po Battery |
| Fast Charging | Yes, Warp Charge 65T | Yes, 33W Fast Charging |