Xiaomi 12 Pro (128GB) vs Samsung Galaxy S21 Ultra (SM-G998B/DS 256GB)
Side by side comparison between Xiaomi 12 Pro vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
6.73"
AMOLED
AMOLED
1440x3200
50
MP
MP
32mp
8GB
RAM
RAM
Octa-core
4600
mAh
mAh
(Non removable)
vs
6.8"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B/DS 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!
9 Advantages 
17 Advantages | 30 Common items in both devices |
| UFS 3.1 |
| Aluminum frame, glass front/back |
| Dolby Vision/HDR10+ / HDR10+ |
| 120Hz |
| 1440x3200 pixels |
| Digital and optical zoom |
| LDAF/PDAF: laser/phase detection autofocus / PDAF: phase detection autofocus on both cameras |
| +23 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 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Model | Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) |
| Other model names | Xiaomi 12 Pro 5G (Snapdragon) 2201122G, 2201122C | Galaxy S21 Ultra 5G (SM-G998B/Dual-SIM) |
| Country or region available |  China |  (Global, International) |
| Brand | Xiaomi | Samsung |
| Release date | 12/31/2021, Announced: 12/28/2011 | 1/29/2021, Announced: 1/14/2021 |
| Depth | 8.2 millimeters (0.32 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 74.6 x 163.6 millimeters (2.94 x 6.44 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
| Weight | 205 grams (7.18 ounces) | 227 grams (7.95 ounces) |
| Build, materials | Aluminum frame, glass front/back | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Display type | AMOLED | Dynamic AMOLED |
| Screen size | 6.73" inches | 6.8" inches |
| Screen-to-body ratio | ~89.6% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
| Display resolution | 1440x3200 pixels (20:9) | 1440x3200 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 521 PPI | 516 PPI |
| Colors | 1 billion | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus | Gorilla Glass Victus |
| Refresh rate | 120Hz | 120Hz |
| Display features | 1000nits[typ], 1500nits[peak] Dolby Vision/HDR10+ | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| System version | Android 12 | Android 11 |
| Firmware update | feature not registered | Android 14 |
| User Interface | MIUI 13 | One UI 3.1 / 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 8 Gen 1 (SM8450) (4nm) | 64bit: Samsung Exynos 2100 (5nm) |
| CPU | Octa-core, 3 processors: 1x 3GHz ARM Cortex-X2 (Single-core) 3x 2.5GHz ARM Cortex-A710 (Triple-core) 4x 1.79GHz ARM Cortex-A510 (Quad-core) | Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 730 (818MHz) | ARM Mali-G78 MP14 (854MHz) |
| Performance (benchmark) | AnTuTu: 985226 (v9) Geekbench: 3682 (v5.1) GFXBench: 46fps (ES 3.1 onscreen) | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| RAM memory | 8GB LPDDR5 | 12GB LPDDR5 |
| Internal storage | 128GB (101GB available) UFS 3.1 | 256GB (220GB available) UFS 3.1 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| 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) + e-SIM |
| Maximum Download / Upload | 2000/1024 Mbps | 5000/1920 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 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 | CDMA 800, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 800/850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41, 42, 48) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26) TD-LTE (34, 38, 39, 40, 41, 42) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
| Primary 5G network | Global version: SA/NSA (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78, 79) China version: SA/NSA (1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79) | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78) |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, UMTS, 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 800/850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41, 42, 48) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26) TD-LTE (34, 38, 39, 40, 41, 42) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 50MP telephoto f/1.950mmPDAF2x-optical-zoom 50MP ultrawide f/2.2115° | (quad camera) 108 megapixels 10MP periscope telephoto f/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video |
| Main camera resolution | 8160x6120 pixels | 12000x9000 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps | 8K UHD (7680x4320) 24 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.9 (aperture) | f/1.8 (aperture) |
| Focal length | 24mm lens | 26mm lens |
| Sensor size | 1/1.28" inches | 1/1.33" inches |
| Pixel size | 1.22µm pixel | 1.8µm pixel |
| Autofocus | LDAF/PDAF: laser/phase detection autofocus | PDAF: phase detection autofocus on both cameras |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | OIS: Optical stabilization |
| Zoom | Digital and optical zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Supported |
| HDR | HDR photo/video on both cameras | HDR photo/video on both cameras |
| Camera extras | 4K@60fps 1080p@960fps Sony IMX707 Leica optics | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Front camera (secondary) | 32 megapixels | 40 megapixels |
| Front camera resolution | 6528x4896 pixels | 7296x5472 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.5 (aperture) | f/2.2 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | feature not registered | 1/2.8" inches |
| Pixel size | 0.7µm pixel | 0.7µm pixel |
🔉 Sound and multimedia | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Loudspeaker | Stereo sound with 4 speakers 24-bit/192kHz Dolby Atmos Tuned by Harman Kardon | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| 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, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | Type-C reversible connector |
| TV output | USB Type-C (reversible) | USB Type-C (reversible) |
| Bluetooth | 5.2 + A2DP/LE | 5.2 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (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 | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Virtual proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4600 mAh | 5000 mAh |
| Charger, watts | 120W Wired fast charging Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 | 25W Wired fast charging USB Power Delivery 3.0 |
| Inductive / wireless charging | 50W Qi wireless charging 10W Reverse wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 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: Gray, Blue, Purple, Green • LiquidCool | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
| Xiaomi 12 Pro (128GB) | Galaxy S21 Ultra (SM-G998B/DS 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.09W/kg (head), 1.05W/kg (body) | 0.24W/kg (head), 0.72W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.6W/kg (head), 1W/kg (body) | 0.714W/kg (head), 1.58W/kg (body) |