Xiaomi Redmi Note 9 (128GB/4GB) vs Samsung Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB)
Side by side comparison between Xiaomi Redmi Note 9 vs Samsung Galaxy S23 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.53"
IPS
IPS
1080x2340
48
MP
MP
13mp
4GB
RAM
RAM
Octa-core
5020
mAh
mAh
(Non removable)
vs
6.8"
AMOLED
AMOLED
1440x3088
200
MP
MP
12mp
8GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S23 Ultra (SM-S918B/DS 256GB/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!
6 Advantages 
33 Advantages | 23 Common items in both devices |
| 8.9 millimeters (0.35 inches) |
| 16 million |
| LED flash |
| PDAF: phase detection autofocus / PDAF: phase detection autofocus on both cameras |
| BSI sensor |
| HDR photo on both cameras / HDR photo/video on both cameras |
| Capacitive |
| +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 Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Model | Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) |
| Other model names | Mi Redmi Note 9 CX296VRD, CX296CIN, M2003J15SS/2003J15SC | Galaxy S23 Ultra 5G (SM-S918B/Dual-SIM) |
| Country or region available |    Brazil, China, India |  (Global, International) |
| Brand | Xiaomi | Samsung |
| Release date | 5/12/2020, Announced: 4/30/2020 | 2/17/2023, Announced: 2/1/2023 |
| Depth | 8.9 millimeters (0.35 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 77.2 x 162.3 millimeters (3.04 x 6.39 in) | 78.1 x 163.4 millimeters (3.07 x 6.43 in) |
| Weight | 199 grams (6.97 ounces) | 234 grams (8.19 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back Back: Gorilla Glass Victus 2 |
| Protection against water and others | Water repellent nano-coating (don't immerse) | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Display type | TFT IPS LCD | Dynamic AMOLED |
| Screen size | 6.53" inches | 6.8" inches |
| Screen-to-body ratio | ~83.5% (screen-to-body ratio) | ~89.5% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 1440x3088 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 395 PPI | 501 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 5 | Gorilla Glass Victus 2 |
| Refresh rate | 60Hz | 120Hz |
| Display features | 450nits[typ] | 1750nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| System version | Android 10 | Android 13 |
| Firmware update | Android 11 | Android 15 |
| User Interface | MIUI 11 / 12 | One UI 5.1 / 6.0 / 7.0 |
⚙️ Processor | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Chipset | 64bit: MediaTek Helio G85 (12nm) | 64bit: Qualcomm Snapdragon 8 Gen 2 (SM8550-AC) (4nm) |
| CPU | Octa-core, 2 processors: 2x 2GHz ARM-Cortex-A75 (Dual-core) 6x 1.8GHz ARM-Cortex-A55 (Hexa-core) | Octa-core, 4 processors: 1x 3.36GHz ARM Cortex-X3 (Single-core) 2x 2.8GHz ARM Cortex-A710 (Dual-core) 2x 2.8GHz ARM Cortex-A715 (Dual-core) 3x 2GHz ARM Cortex-A510 (Triple-core) |
| GPU graphical controller | ARM Mali-G52 MC2 (1GHz) | Qualcomm Adreno 740 |
| Performance (benchmark) | AnTuTu: 200451 (v8) Geekbench: 1292 (v5.1) | AnTuTu: 1241613 (v9) Geekbench: 4927 (v5.1) GFXBench: 67fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| RAM memory | 4GB LPDDR4X | 8GB LPDDR5X |
| Internal storage | 128GB (106GB available) eMMC 5.1 | 256GB (218GB available) UFS 4.0 |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| 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) + e-SIM |
| Maximum Download / Upload | 300/150 Mbps | 3000/1920 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 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat7 (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, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Primary 5G network | Not supported | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 41, 66, 71) |
| 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, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat7 (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, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Secondary 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, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
📷 Camera | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Back camera (main camera) | (quad camera) 48 megapixels 8MP ultrawide f/2.213mm1/4"1.12µm118° 2MP macro f/2.41.75µmAF 2MP depth f/2.41/5"1.7µm | (quad camera) 200 megapixels 10MP periscope telephoto f/4.9230mm1/3.52"1.12µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.52"1.12µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm120°1/2.55"1.4µmPDAFSuper-Steady |
| Main camera resolution | 8000x6000 pixels | 20000x10000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.7 (aperture) |
| Focal length | 26mm (lens) | 24mm (lens) |
| Sensor size | 1/2" inches | 1/1.3" inches |
| Pixel size | 0.8µm pixel | 0.6µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus on both cameras |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | OIS: Optical stabilization |
| Zoom | Only digital zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Supported |
| HDR | HDR photo on both cameras | HDR photo/video on both cameras |
| Camera extras | feature not registered | 8K@24/30fps 4K@30/60fps 1080p@30/60fps 1080p@240/960fps (slow motion) HDR10+ |
📸 Front camera | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Front camera (secondary) | 13 megapixels | 12 megapixels |
| Front camera resolution | 4128x3096 pixels | 4000x3000 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.3 (aperture) | f/2.2 (aperture) |
| Focal length | 29mm (lens) | 26mm (lens) |
| Sensor size | 1/3.06" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Loudspeaker | Mono sound (not stereo) | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones or more | 3 microphones |
| 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 Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| TV output | USB Type-C (reversible) | USB Type-C (reversible) |
| Bluetooth | 5.0 + A2DP/LE | 5.3 + 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 [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 5020 mAh | 5000 mAh |
| Charger, watts | 18W Wired fast charging 9W Reverse charging by cable | 45W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 |
| Inductive / wireless charging | Not supported | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
| Talk time autonomy | 33 hours (1.4 days) | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| 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: Forest Green, Midnight Grey, Polar White • 22.5W charger (18W phone support) | • Colors: Phantom Black, Cream, Green, Lavender, Graphite, Sky Blue, Lime, Red • Samsung DeX • Samsung Pay (Visa, MasterCard) • S Pen (Stylus Pen): Bluetooth 2.8ms latency |
☢️ Radiation rate | ||
| Redmi Note 9 (128GB/4GB) | Galaxy S23 Ultra (SM-S918B/DS 256GB/8GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.84W/kg (head), 0.9W/kg (body) | 0.98W/kg (head), 1.1W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.8W/kg (head), 1.14W/kg (body) | 0.963W/kg (head), 1.398W/kg (body) |