Vivo S1 (V1831T) All specs
Full specifications phone: Vivo S1 (V1831T) specs, detailed technical information, features, price and review. All about this phone.
,
The Vivo S1 (V1831T) is a good Android phone with 2.1GHz Octa-core processor that allows run games and heavy applications.
An advantage of the Vivo S1 (V1831T) is the possibility of using two mobile carriers, a Dual-SIM device with two SIM card slots.
Good connectivity of this device includes Bluetooth 5.0 + A2DP/LE, WiFi 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO, but it lacks NFC connection.
Including the battery, the Vivo S1 (V1831T) phone has 190 grams and it's a very thin device, only 8.54mm.
Summary
*depends on the model⚙️ CPU: MediaTek MT6771WT Helio P70 (12nm)
🤖 Android 9.0
📱 6.33" / 6.38"*
TFT IPS LCD / Super AMOLED*
TFT IPS LCD / Super AMOLED*
🔳 RAM: 4GB / 6GB*
💽 ROM: 128GB
💽 ROM: 128GB
🔌 WIFI5, BT5.0, FM
📷 (triple camera) 12MP + 8MP + 5MP*
🤳 (front) 25MP*
🤳 (front) 25MP*
🔋 3940mAh / 4500mAh*
⚡ 18W
⚡ 18W
📱 Model features | |
| Vivo S1 (V1831T) | |
| Model | Vivo S1 (V1831T) |
| Other model names | BBK vivo S1 (China) V1831 |
| Country or region available |  China |
| Brand | Vivo |
| Release date | 4/1/2019 |
| Depth | 8.54 millimeters (0.34 inches) |
| Size (width x height) | 75.93 x 161.97 millimeters (2.99 x 6.38 in) |
| Weight | 190 grams (6.65 ounces) |
| Build, materials | feature not registered |
| Protection against water and others | Not supported |
📲 Display | |
| Vivo S1 (V1831T) | |
| Display type | TFT IPS LCD |
| Screen size | 6.33" inches |
| Screen-to-body ratio | ~80% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels |
| Touchscreen | Capacitive Multitouch |
| Pixel density (dot pitch) | 407 PPI |
| Colors | 16 million |
| Scratch-resistant glass | Not supported |
| Refresh rate | feature not registered |
| Display features | feature not registered |
🤖 Operating System | |
| Vivo S1 (V1831T) | |
| System version | Android 9.0 Pie |
| Firmware update | feature not registered |
| User Interface | feature not registered |
⚙️ Processor | |
| Vivo S1 (V1831T) | |
| Chipset | 64bit: MediaTek MT6771WT Helio P70 (12nm) |
| CPU | Octa-core, 2 processors: 4x 2.1GHz ARM Cortex-A73 (Quad-core) 4x 2GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | ARM Mali-G72 MP3 900Mhz |
| Performance (benchmark) | feature not registered |
💽 Memory and storage | |
| Vivo S1 (V1831T) | |
| RAM memory | 6GB LPDDR4X |
| Internal storage | 128GB (108GB available) eMMC 5.1 |
| External storage | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | |
| Vivo S1 (V1831T) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 300/50 Mbps |
| Network technology | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details |
| GSM MHz band | Quad-Band 850/900/1800/1900 |
| Primary 2G network | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/2100 |
| Primary 4G network | LTE Cat7 (Bands 1, 3, 5, 8) TD-LTE (Bands 34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported |
| Primary data network | 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 |
| Secondary 2G network | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported |
| Secondary 4G network | Not supported |
| Secondary data network | GPRS, EDGE |
📷 Camera | |
| Vivo S1 (V1831T) | |
| Back camera (main camera) | (triple camera) 12 megapixels 8MP ultrawide f/2.2 5MP depth f/2.4 |
| Main camera resolution | 4000x3000 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash |
| Focal aperture | f/1.8 (aperture) |
| Focal length | 13mm (lens) |
| Sensor size | feature not registered |
| Pixel size | feature not registered |
| Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported |
| Image stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection |
| BSI sensor | Not supported |
| HDR | HDR photo on both cameras |
| Camera extras | feature not registered |
📸 Front camera | |
| Vivo S1 (V1831T) | |
| Front camera (secondary) | 25 megapixels |
| Front camera resolution | 5760x4320 pixels |
| Video recording (secondary) | Full HD (1920x1080) |
| Front flash | Not supported |
| Focal aperture | f/2.0 (aperture) |
| Focal length | feature not registered |
| Sensor size | feature not registered |
| Pixel size | feature not registered |
🔉 Sound and multimedia | |
| Vivo S1 (V1831T) | |
| Loudspeaker | Supported |
| Active noise cancellation | 2 microphones or more |
| Radio | FM |
| TV | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | |
| Vivo S1 (V1831T) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack |
| TV output | Not supported |
| Bluetooth | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported |
| Infrared port | Not supported |
🧭 Sensors | |
| Vivo S1 (V1831T) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported |
🔋 Battery | |
| Vivo S1 (V1831T) | |
| Battery type | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3940 mAh |
| Charger, watts | 18W Wired fast charging |
| Inductive / wireless charging | feature not registered |
| Talk time autonomy | feature not registered |
| Standby | feature not registered |
➕ Other features | |
| Vivo S1 (V1831T) | |
| Call control | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported |
| Video calling | Supported |
| Ringtones | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 |
| Antenna | Internal antenna |
| Qwerty physical keyboard | Not supported |
| Miscellaneous | • Colors: Ice black, Blue, Pink • 19.5:9 display ratio • Always On Display • FunTouch OS 9 • Motorized pop-up front camera |
☢️ Radiation rate | |
| Vivo S1 (V1831T) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered |
Vivo S1 versions (variations) with different specifications
Vivo S1 (V1831A)Vivo S1 (V1831T)
Vivo S1 (V1907) Vivo S1 (V1831T) vs 
Choose the model 
Asus Zenfone Max Plus M2 
Parla Sonic 3.5 
Apple iPhone 17 Pro 
Google Pixel 8 Pro 
How a mobile phone can make your travels easy in Canada
Wednesday, 2.11.2026
Testing the 5 best AI app builders for 2026
Monday, 2.9.2026
Designing the modern home: How technology is transforming home & garden projects
Thursday, 12.4.2025