Samsung Galaxy S3 Slim Duos (SM-G3812B) vs Xiaomi Poco X3 Pro (Global 256GB)
Side by side comparison between Samsung Galaxy S3 Slim vs Xiaomi Poco X3 Pro phones, differences, pros, cons and full specifications. What's the better?
,
4.5"
TFT
TFT
540x960
5
MP
MP
0.3mp
1GB
RAM
RAM
Quad-core
2100
mAh
mAh
(Removable)
vs
6.67"
IPS
IPS
1080x2400
48
MP
MP
20mp
8GB
RAM
RAM
Octa-core
5160
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Poco X3 Pro (Global 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!
4 Advantages 
33 Advantages | 19 Common items in both devices |
| Plastic body, glass front |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| Capacitive |
| Multitouch |
| +12 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 | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Change model | ||
| Model | Galaxy S3 Slim Duos (SM-G3812B) | Poco X3 Pro (Global 256GB) |
| Other model names | Galaxy S3 Slim G3812B, Samsung Galaxy Win Pro | POCO X3 Pro M2102J20SG NFC (256GB+8GB RAM) |
| Country or region available |  Brazil |  (Global, International) |
| Brand | Samsung | Xiaomi |
| Release date | 3/1/2014 | 3/24/2021, Announced: 3/22/2021 |
| Depth | 9.7 millimeters (0.38 inches) | 9.4 millimeters (0.37 inches) |
| Size (width x height) | 66 x 133 millimeters (2.6 x 5.24 in) | 76.8 x 165.3 millimeters (3.02 x 6.51 in) |
| Weight | 139 grams (4.87 ounces) | 215 grams (7.53 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | IP53 certified: protection against dust and splashing |
📲 Display | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Display type | TFT LCD | TFT IPS LCD |
| Screen size | 4.5" inches | 6.67" inches |
| Screen-to-body ratio | ~63.6% (screen-to-body ratio) | ~84.6% (screen-to-body ratio) |
| Display resolution | 540x960 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 245 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 6 |
| Refresh rate | 60Hz | 120Hz |
| Display features | Not supported | 450nits[typ] HDR10 |
🤖 Operating System | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| System version | Android 4.2.2 Jelly Bean | Android 11 |
| Firmware update | feature not registered | Android 13 |
| User Interface | TouchWiz UX | MIUI 12.5 / 13 / 14 |
⚙️ Processor | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Chipset | 32bit: Qualcomm Snapdragon 200 (MSM8225Q) (45nm) | 64bit: Qualcomm Snapdragon 860 (SM8150-AC) (7nm) |
| CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A5 (Quad-core) | Octa-core, 3 processors: 1x 2.96GHz Kryo 485 Gold (Single-core) 3x 2.42GHz Kryo 485 Gold (Triple-core) 4x 1.78GHz Kryo 485 Silver (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 203 (400MHz) | Qualcomm Adreno 640 (250-672MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 483527 (v8) Geekbench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| RAM memory | 1GB LPDDR2 | 8GB LPDDR4X |
| Internal storage | 8GB (5GB available) eMMC 4.5 | 256GB (230GB available) UFS 3.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 800/150 Mbps |
| Network technology | 2G, 3G | 2G, 3G, 4G |
| 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 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Back camera (main camera) | 5 megapixels | (quad camera) 48 megapixels 8MP ultrawide f/2.2119°1.0µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 2592x1944 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/2" inches |
| Pixel size | feature not registered | 0.8µm pixel |
| Autofocus | 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 only main camera | HDR photo on both cameras |
| Camera extras | feature not registered | 1080p@960fps |
📸 Front camera | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Front camera (secondary) | 0.3 megapixels | 20 megapixels |
| Front camera resolution | 640x480 pixels | 5184x3840 pixels |
| Video recording (secondary) | VGA (640x480) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/3.4" inches |
| Pixel size | feature not registered | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Loudspeaker | Mono sound (not stereo) | Stereo sound with dual speakers |
| Active noise cancellation | 1 microphone | 2 microphones or more |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, 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 | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 2100 mAh | 5160 mAh |
| Charger, watts | Wired charging | 33W Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| Call control | Voice dialing, Voice recorder | 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: Black, White • Java framework | • Colors: Phantom Black, Frost Blue, Metal Bronze • Silicone Case included • Cooling up to 6 °C • LiquidCool 1.0 Plus |
☢️ Radiation rate | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Xiaomi Poco X3 Pro (Global 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.61W/kg (head), 1.13W/kg (body) | 0.99W/kg (head), 0.67W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.553W/kg (head), 0.395W/kg (body) | 0.57W/kg (head), 0.9W/kg (body) |