Xiaomi Mi 9 (128GB/8GB) vs Xiaomi Redmi K20 (128GB)
Side by side comparison between Xiaomi Mi 9 vs Xiaomi Redmi K20 phones, differences, pros, cons and full specifications. What's the better?
,
6.39"
AMOLED
AMOLED
1080x2340
48
MP
MP
20mp
8GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
vs
6.39"
AMOLED
AMOLED
1080x2340
48
MP
MP
20mp
6GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Mi 9 (128GB/8GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
9 Advantages 
3 Advantages | 37 Common items in both devices |
| 128GB (109GB available) |
| UFS 2.1 |
| Aluminum frame, glass front/back |
| 16 million |
| 1080x2340 pixels |
| 403 PPI |
| 6.39" |
| +30 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Model | Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) |
| Other model names | 小米9, Xiaomi Mi9 (8GB RAM), M1902F1A, M1902F1G, M1902F1T | Xiaomi Redmi K20 M1903F10A, M1903F10C, MZB7754IN, MZB7755IN |
| Country or region available |  China |  China, India |
| Brand | Xiaomi | Xiaomi |
| Release date | 3/1/2019 | 6/1/2019 |
| Depth | 7.61 millimeters (0.3 inches) | 8.8 millimeters (0.35 inches) |
| Size (width x height) | 74.67 x 157.5 millimeters (2.94 x 6.2 in) | 74.3 x 156.7 millimeters (2.93 x 6.17 in) |
| Weight | 173 grams (6.06 ounces) | 191 grams (6.69 ounces) |
| Build, materials | Aluminum frame, glass front/back | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Display type | Super AMOLED | AMOLED |
| Screen size | 6.39" inches | 6.39" inches |
| Screen-to-body ratio | ~85.2% (screen-to-body ratio) | ~86.1% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 403 PPI | 403 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 6 | Gorilla Glass 5 |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 600nits[typ] HDR10 |
🤖 Operating System | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| System version | Android 9.0 Pie | Android 9.0 Pie |
| Firmware update | Android 10 | Android 10 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 855 (SM8150) (7nm) | 64bit: Qualcomm Snapdragon 730 (SM7150-AA) (8nm) |
| CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core) | Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core) |
| GPU graphical controller | Qualcomm Adreno 640 (585MHz) | Qualcomm Adreno 618 (610MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| RAM memory | 8GB LPDDR4X | 6GB LPDDR4X |
| Internal storage | 128GB (109GB available) UFS 2.1 | 128GB (109GB available) UFS 2.1 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 1024/150 Mbps | 800/150 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | CDMA 800, GSM 850/900/1800/1900 | CDMA 800 (China), GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 | MZB7754IN, MZB7755IN, MZB7756IN version: UMTS 850/900/1900/2100 M1903F10A, M1903F10C, M1903F10T version: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat16/13 VoLTE Global version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (Bands 38, 39, 40) China version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17) TD-LTE (Bands 34, 38, 39, 40, 41) | LTE Cat15/13 VoLTE MZB7754IN, MZB7755IN, MZB7756IN version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 38, 40, 41) M1903F10A, M1903F10C, M1903F10T version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 34, 38, 39, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE |
📷 Camera | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Back camera (main camera) | (triple camera) 48 megapixels 16MP ultrawide f/2.213mm1/3.0"1.0µmPDAF 12MP telephoto f/2.254mm1/3.6"1.0µmPDAF2x-optical-zoom | (triple camera) 48 megapixels 8MP telephoto f/2.453mm1/4"1.12µmPDAF2x-optical-zoom 13MP ultrawide f/2.412mm1/3"1.12µm |
| Main camera resolution | 8000x6000 pixels | 8000x6000 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | 4K UHD (3840x2160) 30 fps |
| Flash | Dual-LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | 1/2" inches | 1/2" inches |
| Pixel size | 0.8µm pixel | 0.8µm pixel |
| Autofocus | LDAF/PDAF: laser/phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Digital and optical zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Front camera (secondary) | 20 megapixels | 20 megapixels *Motorized pop-up camera (slider) |
| Front camera resolution | 5184x3840 pixels | 5184x3840 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 0.9µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | Type-C jack with 3.5mm jack adapter | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3300 mAh | 4000 mAh |
| Charger, watts | 27W Wired fast charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | Qi wireless charging | feature not registered |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Piano Black, Lavender Violet, Ocean Blue • MIUI 10 • HDR10/DCI-P3 display • Sapphire glass camera cover • Quick Charge 4+ • Fast wireless charging 20W | • Colors: Carbon black, Flame red, Glacier blue • MIUI 10 • HDR display • 24-bit/192kHz audio • Quick Charge 4+ |
☢️ Radiation rate | ||
| Xiaomi Mi 9 (128GB/8GB) | Redmi K20 (128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.07W/kg (head), 0.72W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |