Vivo X27 vs Redmi K40
| Type | Touch | Touch |
| Dimensions | 157.66 x 74.26 x 8.95 mm | 163.70 x 76.40 x 7.80 mm |
| Weight | 188.30 g | 196.00 g |
| Display size | 6.39" | 6.67" |
| Display | Color / AMOLED 16M colors 1080 x 2340 px (6.39") 403 ppi | Color / AMOLED 16M colors 120 Hz 1080 x 2400 px (6.67") 395 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Standard battery | Li-Ion 3950 mAhBuy powerbank
| Li-Po 4520 mAhBuy powerbank
|
| Quick battery charging |  | Quick Charge 3.0 |
| Wireless battery charging | | |
| Internal memory | 128 GB, 256 GB | 128 GB, 256 GB |
| RAM memory | 8 GB | 6 GB, 8 GB, 12 GB |
| Memory cards | | |
| Operating system | Android 9.0 Pie | Android 11 |
| Interface | Funtouch 9.0 | MIUI 12 |
| Processor | Qualcomm Snapdragon 710 | Qualcomm Snapdragon 870 SM8250 |
| Processor clock | 2200 MHz | 3200 MHz |
| GPU | Adreno 616 | Adreno 650 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard |  | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | |
| Announced | 1Q 2019 | 1Q 2021 |
| Other names | V1829A; V1829T | M2012K11AC; Xiaomi Redmi K40 |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1900 2100 | 850 900 1700 1900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300, 2100, 1900 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 700 TDD LTE: 3500, 2600, 2500, 2300, 2100, 1900 |
| Standard 5G | | FDD 5G: 2100, 1800, 700 TDD 5G: 3700, 3500, 2500 |
| CDMA | | |
| Standard TD-SCDMA | 1900 2000 | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | | Standard |
| Photo sensor model | | Sony IMX582 |
| Photo matrix | 48 Mpx | 48 Mpx |
| Sensor size | | 1/2 |
| Pixel size | | 0,8 µm |
| Resolution | | 8000x6000 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | | 2840x2160 px |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | AF | AF, EIS, f/1.79 |
| Second camera | | |
| Camera type | | Wide-angle |
| Photo sensor model | | Sony IMX355 |
| Photo matrix | 13 Mpx | 8 Mpx |
| Optical zoom | | |
| Field of view | | 119 ° |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | FF |
| Third camera | | |
| Camera type | | Macro |
| Photo sensor model | | Samsung S5K5E9 |
| Photo matrix | 5 Mpx | 5 Mpx |
| Sensor size | | 1/5 |
| Pixel size | | 1,12 µm |
| Resolution | | 2592x1944 px |
| Optical zoom | | |
| Focal length | | 50 mm |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | EIS |
CAMERAS - FRONT
| First camera | | |
| Camera type | | Portrait |
| Photo sensor model | | Samsung S5K3T2 |
| Photo matrix | 16 Mpx | 20 Mpx |
| Sensor size | | 1/3,4 |
| Pixel size | | 0,8 µm |
| Resolution | | 5184x3880 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | | 1920x1080 px |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | FF |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 42.20 Mbit/s | 42.20 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | 750.00 Mbit/s | 1174.00 Mbit/s |
| LTE UP | - | 210.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | class 8 |
| Bluetooth | v5.0 | v5.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac/ax |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v3.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | 2 |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, AMR, APE, FLAC, MID, OGG, WAV, WMA | AAC, AAC+, AMR, APE, AWB, DSF, FLAC, M4A, MID, OGG, WAV, WMA, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |