Motorola Moto G51 (128GB/4GB) vs Xiaomi Mix 4 (256GB/12GB)
Side by side comparison between Motorola Moto G51 vs Xiaomi Mix 4 phones, differences, pros, cons and full specifications. What's the better?
,
6.8"
IPS
IPS
1080x2400
50
MP
MP
13mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.67"
AMOLED
AMOLED
1080x2400
108
MP
MP
20mp
12GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Mix 4 (256GB/12GB)
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 
27 Advantages | 27 Common items in both devices |
| 120Hz |
| 1080x2400 pixels |
| PDAF: phase detection autofocus / LDAF/PDAF: laser/phase detection autofocus |
| BSI sensor |
| HDR photo on both cameras / HDR photo/video on both cameras |
| (front) Full HD (1920x1080) |
| 5G SA/NSA |
| +20 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 | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Model | Moto G51 (128GB/4GB) | Mix 4 (256GB/12GB) |
| Other model names | Lenovo Moto G51 5G (XT2171-1, XT2171-2, XT2171-3) | 小米MIX 4 2106118C (12GB RAM) |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Motorola | Xiaomi |
| Release date | 11/30/2021, Announced: 11/3/2021 | 8/16/2021, Announced: 8/10/2021 |
| Depth | 9.1 millimeters (0.36 inches) | 8 millimeters (0.31 inches) |
| Size (width x height) | 76.5 x 170.5 millimeters (3.01 x 6.71 in) | 75.35 x 162.65 millimeters (2.97 x 6.4 in) |
| Weight | 208 grams (7.28 ounces) | 225 grams (7.88 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front, ceramic back |
| Protection against water and others | IP52 certified: protection against dust and splashing | IP53 certified: protection against dust and splashing |
📲 Display | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Display type | TFT IPS LCD | AMOLED |
| Screen size | 6.8" inches | 6.67" inches |
| Screen-to-body ratio | ~85.6% (screen-to-body ratio) | ~87.6% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 387 PPI | 395 PPI |
| Colors | 16 million | 1 billion |
| Scratch-resistant glass | Not supported | Gorilla Glass Victus |
| Refresh rate | 120Hz | 120Hz |
| Display features | Not supported | Dolby Vision/HDR10+ Touch Sampling Rate: 480Hz |
🤖 Operating System | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| System version | Android 11 | Android 11 |
| Firmware update | feature not registered | Android 13 |
| User Interface | My UX | MIUI 12.5 / 13 |
⚙️ Processor | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 480+ (SM4350-AC) (8nm) | 64bit: Qualcomm Snapdragon 888+ (SM8350-AC) (5nm) |
| CPU | Octa-core, 2 processors: 2x 2.2GHz Kryo 460 (Dual-core) 6x 1.8GHz Kryo 460 (Hexa-core) | Octa-core, 3 processors: 1x 3GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 619 | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 798010 (v9) |
💽 Memory and storage | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| RAM memory | 4GB LPDDR4X | 12GB LPDDR5 |
| Internal storage | 128GB (108GB available) eMMC 5.1 | 256GB (218GB available) UFS 3.1 |
| External storage | Until 512GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Not supported |
📶 Mobile networks | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD 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 | 2000/1024 Mbps | 2000/1024 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 | GSM 850/900/1800/1900 | CDMA 800, 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 Cat15 (1, 2, 3, 5, 7, 8, 18, 20, 26, 28, 32) TD-LTE (38, 40, 41, 42, 43) VoLTE | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) VoLTE |
| Primary 5G network | SA/NSA (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78) | SA/NSA/Sub6 (1, 3, 5, 8, 28, 41, 77, 78, 79) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, 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 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat15 (1, 2, 3, 5, 7, 8, 18, 20, 26, 28, 32) TD-LTE (38, 40, 41, 42, 43) VoLTE | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41, 42) 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 | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 8MP ultrawide f/2.2118°1/4"1.12µm 2MP macro f/2.4 | (triple camera) 108 megapixels 13MP ultrawide f/2.212mm123°1/3.06"1.12µm 8MP periscope telephoto f/4.1120mmPDAFOIS5x-optical-zoom |
| Main camera resolution | 8160x6120 pixels | 12000x9000 pixels |
| Video recording (primary) | Full HD (1920x1080) 60 fps | 8K UHD (7680x4320) 24 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.9 (aperture) |
| Focal length | feature not registered | 24mm (lens) |
| Sensor size | 1/2.76" inches | 1/1.33" inches |
| Pixel size | 0.64µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | LDAF/PDAF: laser/phase detection autofocus |
| 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 | 1080p@240fps | 4K@30/60fps 1080p@30/60/120/480fps |
📸 Front camera | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Front camera (secondary) | 13 megapixels | 20 megapixels |
| Front camera resolution | 4128x3096 pixels | 5184x3840 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | f/3.4 (aperture) |
| Focal length | feature not registered | 27mm (lens) |
| Sensor size | feature not registered | 1/0.8" inches |
| Pixel size | 1.12µm pixel | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Loudspeaker | Mono sound (not stereo) Dolby Atmos | Stereo sound 24-bit/192kHz Tuned by Harman Kardon |
| 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 | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| 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 | 5.1 + A2DP/LE | 5.2 + 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 | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC |
| NFC | Supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Sensors | Accelerometer Ambient light sensor Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Heart rate Proximity sensor UWB (Ultra Wideband) |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 4500 mAh |
| Charger, watts | 10W Wired charging | 120W Wired fast charging Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 |
| Inductive / wireless charging | Not supported | 50W Qi wireless charging 10W Reverse wireless charging |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| 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: Indigo Blue, Aqua Blue, Bright Silver | • Colors: Ceramic Black, Ceramic White, Shadow Gray • Silicone case included • Screen protector included |
☢️ Radiation rate | ||
| Moto G51 (128GB/4GB) | Xiaomi Mix 4 (256GB/12GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |