Xiaomi Redmi 9 (128GB/4GB) vs Xiaomi Redmi K30S (256GB)
Side by side comparison between Xiaomi Redmi 9 vs Xiaomi Redmi K30S phones, differences, pros, cons and full specifications. What's the better?
,
6.53"
IPS
IPS
1080x2340
13
MP
MP
8mp
4GB
RAM
RAM
Octa-core
5020
mAh
mAh
(Non removable)
vs
6.67"
IPS
IPS
1080x2400
64
MP
MP
20mp
8GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Redmi K30S (256GB)
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!
7 Advantages 
21 Advantages | 23 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| 395 PPI |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| +16 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 | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Model | Redmi 9 (128GB/4GB) | Redmi K30S (256GB) |
| Other model names | Xiaomi Redmi 9 M2004J19C | Xiaomi Redmi K30S 5G M2007J3SC |
| Country or region available |  China | China |
| Brand | Xiaomi | Xiaomi |
| Release date | 6/10/2020 | 10/27/2020 |
| Depth | 9.1 millimeters (0.36 inches) | 9.33 millimeters (0.37 inches) |
| Size (width x height) | 77.01 x 163.32 millimeters (3.03 x 6.43 in) | 76.4 x 165.1 millimeters (3.01 x 6.5 in) |
| Weight | 198 grams (6.93 ounces) | 216 grams (7.56 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6.53" inches | 6.67" inches |
| Screen-to-body ratio | ~83.2% (screen-to-body ratio) | ~85.2% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 395 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 5 |
| Refresh rate | 60Hz | 144Hz |
| Display features | 400nits[typ] | 500nits[typ] HDR10 |
🤖 Operating System | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| System version | Android 10 | Android 10 |
| Firmware update | Android 11 | feature not registered |
| User Interface | MIUI 12 | feature not registered |
⚙️ Processor | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Chipset | 64bit: MediaTek Helio G80 (MT6769V/CU) (12nm) | 64bit: Qualcomm Snapdragon 865 (SM8250) (7nm) |
| CPU | Octa-core, 2 processors: 2x 2GHz ARM Cortex-A75 (Dual-core) 6x 1.8GHz ARM Cortex-A55 (Hexa-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core) |
| GPU graphical controller | ARM Mali-G52 MC2 (950MHz) | Qualcomm Adreno 650 (250-587MHz) |
| Performance (benchmark) | AnTuTu: 201829 (v8) Geekbench: 1325 (v5.1) | feature not registered |
💽 Memory and storage | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| RAM memory | 4GB LPDDR4X | 8GB LPDDR5 |
| Internal storage | 128GB (106GB available) eMMC 5.1 | 256GB (230GB available) UFS 3.1 |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | 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 | 300/50 Mbps | 2000/150 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
| 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 | GSM 850/900/1800/1900 | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 3, 41, 78, 79) |
| Primary data network | GPRS, EDGE, UMTS, 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, SA/NSA |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE |
📷 Camera | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Back camera (main camera) | (quad camera) 13 megapixels 8MP ultrawide f/2.2118°1/4.0"1.12µm 5MP macro f/2.4 2MP depth f/2.4 | (triple camera) 64 megapixels 13MP ultrawide f/2.4123°1.12µm 5MP macro f/2.4AF |
| Main camera resolution | 4128x3096 pixels | 10120x6328 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.2 (aperture) | f/1.9 (aperture) |
| Focal length | 28mm lens | 26mm lens |
| Sensor size | 1/3.1" inches | 1/1.73" inches |
| Pixel size | 1.12µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital 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 | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Front camera (secondary) | 8 megapixels | 20 megapixels |
| Front camera resolution | 3264x2448 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 | 27mm lens | 27mm lens |
| Sensor size | 1/4" inches | 1/3.4" inches |
| Pixel size | 1.12µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Loudspeaker | Mono sound (not stereo) | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C jack with 3.5mm jack adapter |
| TV output | USB Type-C (reversible) | USB Type-C (reversible) |
| Bluetooth | 5.0 + A2DP/LE | 5.1 + 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/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC |
| NFC | Not supported | Supported |
| Infrared port | Supported | Supported |
🧭 Sensors | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5020 mAh | 5000 mAh |
| Charger, watts | 18W Wired fast charging | 33W Wired fast charging Quick Charge 4+ USB Power Delivery 3.0 |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 31 hours (1.3 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| 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: Carbon Gray, Sunset Purple, Ocean Green, Pink/Blue • 10W charger included | • Colors: Cosmic Black, Lunar Silver • MIUI 12 • Silicone Case included • Screen protector included • Dual stereo speakers • 24-bit/192kHz audio • Mi Pay |
☢️ Radiation rate | ||
| Redmi 9 (128GB/4GB) | Redmi K30S (256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.913W/kg (head), 0.999W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.711W/kg (head), 1.059W/kg (body) | feature not registered |