In depth comparison and review of Xiaomi POCO X3 NFC and Samsung Galaxy S23 Ultra. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-S918B/DS | |
| Form Factor | Touch | Touch | |
| Height | 165.3 mm | 163.4 mm | Xiaomi POCO X3 NFC has greater height than Samsung Galaxy S23 Ultra. |
| Width | 76.8 mm | 78.1 mm | Samsung Galaxy S23 Ultra has greater width than Xiaomi POCO X3 NFC. |
| Depth | 9.4 mm | 8.9 mm | Samsung Galaxy S23 Ultra is narrower than Xiaomi POCO X3 NFC. |
| Weight | 215 g | 233 g | Xiaomi POCO X3 NFC is lighter than Xiaomi POCO X3 NFC. |
| Body Colour | Cobalt blue | Shadow grey | Lavender | Cream | Green | Phantom black | |
| Body Material | - | PET film, recycled glass, Armour Aluminium frame | |
| Protection | Splashproof | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S23 Ultra is waterproof. |
| IP rating | IP53 | IP68 | |
| Repairability Index | - | 8.2 (out of 10) | |
| SAR Value | 0.558 W/kg (head), 0.986 W/kg (body), 1.997 W/kg (limb) | 1.398 W/kg (body), 0.963 W/kg (head), 2.95 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C | |
| SIM Card Type (Size) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Display Type | - | OLED display | |
|---|---|---|---|
| Display Technology | - | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 6.67" | 6.8" | Samsung Galaxy S23 Ultra has larger screen size than Xiaomi POCO X3 NFC. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 3088 x 1440 pixels | Samsung Galaxy S23 Ultra has better screen resolution than Xiaomi POCO X3 NFC. |
| Display Format | Full HD+ | QHD+ | |
| Pixel Density | 395 ppi | 500 ppi | Samsung Galaxy S23 Ultra has better pixel density than Xiaomi POCO X3 NFC. |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | - | 1750 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1500:1 | 3000000:1 | Samsung Galaxy S23 Ultra has better display contrast ratio than Xiaomi POCO X3 NFC. |
| HDR | Yes | Yes | Both phones have HDR. |
| HDR Technology | HDR10 | HDR10+ | |
| Display Enhancement Technology | - | Vision Booster technology | |
| Display Refresh Rate | 120 Hz | 120 Hz | Both phones have the same refresh rate. |
| Touch Sampling Rate | 240 Hz | 240 Hz | |
| Display Features | Dark mode, Dot Display | AOD(Always On Display), Video Wallpaper, 100% DCI-P3 | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Corning Gorilla Glass Victus 2 (scratch resistant glass) |
| PROCESSOR | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 732G | Qualcomm Snapdragon 8 Gen 2 | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 3.36 GHz | Samsung Galaxy S23 Ultra has higher clock speed than Xiaomi POCO X3 NFC. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Xiaomi POCO X3 NFC has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 618 | - |
| MEMORY | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | LPDDR5 SDRAM - 8 GB | Samsung Galaxy S23 Ultra has more RAM than Xiaomi POCO X3 NFC. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 256 GB | Samsung Galaxy S23 Ultra has more internal memory than Xiaomi POCO X3 NFC. |
| User Memory | - | 216.6 GB | |
| Memory Interface | UFS 2.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | - |
| CAMERA | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 4 | |
|---|---|---|---|
| Sensor Resolution | 64 Megapixel | 200 Megapixel | Samsung Galaxy S23 Ultra has better camera resolution than Xiaomi POCO X3 NFC. |
| Sensor Size | 1/1.73" | - | |
| Sensor Name | Sony Exmor RS IMX682 sensor | - | |
| Lens Type | - | Wide-angle lens | |
| Lens Aperture | F/1.89 | F/1.7 | Samsung Galaxy S23 Ultra has better lens aperture than Xiaomi POCO X3 NFC. |
| Field of View (FoV) | - | 85 degree(s) | |
| Pixel Size | 1.6 μm | 0.6 μm | Xiaomi POCO X3 NFC has larger camera pixel size than Samsung Galaxy S23 Ultra. |
| Optical Image Stabiliser (OIS) | - | Dual OIS (Optical Image Stabilisation) | Samsung Galaxy S23 Ultra has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Self-Timer Delay | - | Yes | |
| Special Effects | Kaleidoscope | Super HDR, face retouch, Grid Line, selfie colour tone | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Pro mode, night mode, SteadyShot, AI portrait mode, AI Beautify, Pro Video mode, Macro video, Movie frame, photo filters, AI SkyScaping 3.0, AI photo clones, Timed burst, Document mode 2.0 | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Portrait, Night, Motion Photo, Mountain, Filter mode, Single Take, Pro Video, Portrait video, Director's View, Expert RAW mode, My Filter mode, Astrolapse | |
| Light Source | LED flash | High CRI LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1920 x 1080 (1080p) at 960 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps, 7680 x 4320 (UHD 8K) at 30fps, 3840 x 2160 (4K) HDR10+ at 60 fps, Director's View 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | 4-in-1 Super Pixel, AI scene detection, AI Quad camera, Support LOG format, 6 long exposure modes, AI dynamic studio | Blink detection, QR-code scanner, RAW image capture, VDIS (Video Digital Image Stabilisation), Tracking AF, Quick Share, Scene Optimiser, Lens smudge, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, backlighting detection, Quick Measure, Zoom-In Mic, HEIF image capture, Take 33MP still photos while playing 8K video, Single Take, AR Doodle, HEVC (High Efficiency Video coding) support, Auto framing, UW shape correction, Auto FPS, object eraser, Digital zoom up to 20x for video, High Bitrate, 360 Audio Recording |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 13 Megapixel | 12 Megapixel | Xiaomi POCO X3 NFC has better second camera resolution than Samsung Galaxy S23 Ultra. |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
| Field of View (2nd Camera) | 119 degree(s) | 120 degree(s) | Samsung Galaxy S23 Ultra has larger second camera lens field of view than Xiaomi POCO X3 NFC. |
| Pixel Size (2nd Camera) | - | 1.4 μm |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 10 Megapixel | Samsung Galaxy S23 Ultra has higher resolution third camera than Xiaomi POCO X3 NFC. |
|---|---|---|---|
| Lens Type (3rd Camera) | - | Telephoto lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/4.9 | Xiaomi POCO X3 NFC has better third camera lens aperture than Xiaomi POCO X3 NFC. |
| Field of View (3rd Camera) | - | 11 degree(s) | |
| Pixel Size (3rd Camera) | 1.75 μm | 1.12 μm | Xiaomi POCO X3 NFC has larger third camera pixel size than Samsung Galaxy S23 Ultra. |
| Optical Zoom | - | 10x | |
| Camera Functions (3rd Camera) | Macro camera | - | |
| Camera Features (3rd Camera) | FF (4cm) | 100x Super Resolution Zoom, Space Zoom |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | 10 Megapixel | Samsung Galaxy S23 Ultra has higher resolution fourth camera than Xiaomi POCO X3 NFC. |
|---|---|---|---|
| Lens Type (4th Camera) | - | Telephoto lens | |
| Lens Aperture (4th Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the fourth camera. |
| Field of View (4th Camera) | - | 36 degree(s) | |
| Pixel Size (4th Camera) | 1.75 μm | 1.12 μm | Xiaomi POCO X3 NFC has larger fourth camera pixel size than Samsung Galaxy S23 Ultra. |
| Optical Zoom | - | 3x | |
| Camera Functions (4th Camera) | Depth camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 12 Megapixel | Xiaomi POCO X3 NFC has better front camera resolution than Samsung Galaxy S23 Ultra. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Field of View (Front) | - | 80 degree(s) | |
| Pixel Size (Front) | 1.6 μm | 1.12 μm | Xiaomi POCO X3 NFC has larger front camera pixel size than Samsung Galaxy S23 Ultra. |
| Focus Adjustment | - | Automatic | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Selfie panorama, portrait mode, AI Beautify, Short video mode | - | |
| Light Source (Front) | Display flash | - | |
| Camera Features (Front) | Self-timer, 4-in-1 Super Pixel technology, AI scene detection, AI studio lighting, Palm shutter, full screen frame, Short video filter | 2PD AF |
| BATTERY AND CHARGING | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Battery Capacity (Battery Size) | 5160 mAh | 5000 mAh | Xiaomi POCO X3 NFC has larger battery capacity than Samsung Galaxy S23 Ultra. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 | Samsung Galaxy S23 Ultra has fast charging technology. |
| Wireless Charging | - | Yes | Samsung Galaxy S23 Ultra can be charged wirelessly. |
| Wireless Charging Standards | - | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | |
| Talk Time | - | 2940 minutes | |
| Run Time Details | Playback (video): up to 17 hrs Gaming: up to 10 hrs Playback (Music): up to 153 hrs |
Talk (4G): up to 2940 min Active online usage (LTE): up to 25 hrs Active online usage (Wi-Fi): up to 25 hrs Playback (wireless video): up to 26 hrs Playback (wireless audio): up to 99 hrs |
| CELLULAR | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S23 Ultra has more advanced generation mobile network. |
| Operating System | Android 10 | Android 13 | |
| User Interface | POCO Launcher 2.0 (MIUI12) | Samsung One UI 5.1 | |
| Intelligent Assistant | - | Bixby | |
| Payment Technology | Google Pay | Samsung Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n66, n75, n77, n78, n40, n25, n12 | |
| 5G NR Frequency | - | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, SDL DL 1500+, TDD TD 3700, TDD TD 3500, TDD 2300, FDD 1900, n12 | |
| Wireless Interface | Wi-Fi | IEEE 802.11a/b/g/n/ac/ax, Wi-Fi 6E | |
| Bluetooth | Bluetooth 5.1 | Bluetooth 5.3 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Ultra-Wideband (UWB) | - | Yes | Samsung Galaxy S23 Ultra has UWB wireless technology. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), M4A, DSF, AWB | WAV, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | Hi-Res audio | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, Dolby Digital sound, amplify ambient sound |
| FEATURES | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor | Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Face recognition, fingerprint reader (side) | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | Infrared remote control, MIMO technology, AI face unlock, Google Lens, linear motor, Qualcomm 4th generation AI Engine, LiquidCool Technology 1.0 Plus, GAME Turbo 3.0 | S Pen multi-input, Air View, MIMO technology, Screen Write, notification flashlight, Smart Select, Three microphones, Samsung KNOX, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, Secure Folder function, TalkBack, Dual Audio, Intelligent Performance Enhancer, Samsung Smart Switch, AR Doodle, PENUP, Bixby key, Bluetooth Scalable Codec, Samsung Knox Vault, DisplayPort over USB Type-C, dual stereo speakers tuned by Dolby Atmos, Samsung Seamless Codec, Samsung Wallet |
| OTHERS | Xiaomi POCO X3 NFC | Samsung Galaxy S23 Ultra |
|---|
| Included Accessories | SIM card removal tool, USB-C cable, 33W charger, anti-bacterial case, anti-bacterial screen protector | SIM card removal tool, S Pen, USB-C to USB-C cable | |
|---|---|---|---|
| Compliant Standards | IP53, TUV Rheinland Low Blue Light Certification | VDE, IP68, HAC (Hearing Aid Compatible), EcoLogo, IEC 61960, Carbon Trust | |
| Max Depth of Water Resistance | - | 1.5 m |
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