Samsung Galaxy S3 Slim Duos (SM-G3812B) vs Xiaomi Redmi K30S (128GB)
Side by side comparison between Samsung Galaxy S3 Slim vs Xiaomi Redmi K30S 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
64
MP
MP
20mp
8GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Redmi K30S (128GB)
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 
30 Advantages | 18 Common items in both devices |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| Capacitive |
| Multitouch |
| +11 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) | Redmi K30S (128GB) | |
| Change model | ||
| Model | Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) |
| Other model names | Galaxy S3 Slim G3812B, Samsung Galaxy Win Pro | Xiaomi Redmi K30S 5G M2007J3SC |
| Country or region available |  Brazil |  China |
| Brand | Samsung | Xiaomi |
| Release date | 3/1/2014 | 10/27/2020 |
| Depth | 9.7 millimeters (0.38 inches) | 9.33 millimeters (0.37 inches) |
| Size (width x height) | 66 x 133 millimeters (2.6 x 5.24 in) | 76.4 x 165.1 millimeters (3.01 x 6.5 in) |
| Weight | 139 grams (4.87 ounces) | 216 grams (7.56 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| 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) | ~85.2% (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 5 |
| Refresh rate | 60Hz | 144Hz |
| Display features | Not supported | 500nits[typ] HDR10 |
🤖 Operating System | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| System version | Android 4.2.2 Jelly Bean | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | TouchWiz UX | feature not registered |
⚙️ Processor | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| Chipset | 32bit: Qualcomm Snapdragon 200 (MSM8225Q) (45nm) | 64bit: Qualcomm Snapdragon 865 (SM8250) (7nm) |
| CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A5 (Quad-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 203 (400MHz) | Qualcomm Adreno 650 (250-587MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| RAM memory | 1GB LPDDR2 | 8GB LPDDR5 |
| Internal storage | 8GB (5GB available) eMMC 4.5 | 128GB (106GB available) UFS 3.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| 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) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 2000/150 Mbps |
| Network technology | 2G, 3G | 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 850/1900/2100 | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 3, 41, 78, 79) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, 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 | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE |
📷 Camera | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| Back camera (main camera) | 5 megapixels | (triple camera) 64 megapixels 13MP ultrawide f/2.4123°1.12µm 5MP macro f/2.4AF |
| Main camera resolution | 2592x1944 pixels | 10120x6328 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/1.9 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/1.73" 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 | feature not registered |
📸 Front camera | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| 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 | 27mm (lens) |
| 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) | Redmi K30S (128GB) | |
| Loudspeaker | Mono sound (not stereo) | Supported |
| Active noise cancellation | 1 microphone | 2 microphones or more |
| Radio | FM | Not supported |
| 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) | Redmi K30S (128GB) | |
| USB | MicroUSB 2.0 | 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 | Not supported | USB Type-C (reversible) |
| Bluetooth | 4.0 + A2DP | 5.1 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| 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) | Redmi K30S (128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 2100 mAh | 5000 mAh |
| Charger, watts | Wired charging | 33W Wired fast charging Quick Charge 4+ USB Power Delivery 3.0 |
| 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) | Redmi K30S (128GB) | |
| 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: Cosmic Black, Lunar Silver • MIUI 12 • Silicone Case included • Screen protector included • Dual stereo speakers • 24-bit/192kHz audio • Mi Pay |
☢️ Radiation rate | ||
| Galaxy S3 Slim Duos (SM-G3812B) | Redmi K30S (128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.61W/kg (head), 1.13W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.553W/kg (head), 0.395W/kg (body) | feature not registered |