Vivo S1 (V1831A) vs Lenovo Vibe Z2 Pro (K920)
Side by side comparison between Vivo S1 vs Lenovo Vibe Z2 Pro phones, differences, pros, cons and full specifications. What's the better?
,
6.33"
IPS
IPS
1080x2340
12
MP
MP
25mp
6GB
RAM
RAM
Octa-core
3940
mAh
mAh
(Non removable)
vs
6"
IPS
IPS
1440x2560
16
MP
MP
5mp
3GB
RAM
RAM
Quad-core
4000
mAh
mAh
(Non removable)
What's the better phone? Vivo S1 (V1831A)
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!
15 Advantages 
9 Advantages | 24 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| 4K UHD (3840x2160) |
| (front) Full HD (1920x1080) |
| 4G LTE-A |
| +17 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 | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Model | Vivo S1 (V1831A) | Vibe Z2 Pro (K920) |
| Other model names | BBK vivo S1 (China) V1831 | Phablet Lenovo K920 Vibe Z2 Pro LTE-A |
| Country or region available |  China | feature not registered |
| Brand | Vivo | Lenovo |
| Release date | 4/1/2019 | 9/1/2014 |
| Depth | 8.54 millimeters (0.34 inches) | 7.7 millimeters (0.3 inches) |
| Size (width x height) | 75.93 x 161.97 millimeters (2.99 x 6.38 in) | 81.3 x 156 millimeters (3.2 x 6.14 in) |
| Weight | 190 grams (6.65 ounces) | 179 grams (6.27 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6.33" inches | 6" inches |
| Screen-to-body ratio | ~80% (screen-to-body ratio) | ~78.3% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels | 1440x2560 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 407 PPI | 490 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 3 |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| System version | Android 9.0 Pie | Android 4.4.2 KitKat |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Chipset | 64bit: MediaTek MT6771WT Helio P70 (12nm) | 32bit: Qualcomm Snapdragon 801 MSM8974-AC (28nm) |
| CPU | Octa-core, 2 processors: 4x 2.1GHz ARM Cortex-A73 (Quad-core) 4x 2GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 2.5GHz Krait 400 (Quad-core) |
| GPU graphical controller | ARM Mali-G72 MP3 900Mhz | Qualcomm Adreno 330 578Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| RAM memory | 6GB LPDDR4X | 3GB LPDDR3 |
| Internal storage | 128GB (108GB available) eMMC 5.1 | 32GB |
| External storage | Until 256GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| 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) nano-SIM (4FF) | 2 slots (Dual-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 300/50 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G, 4G | 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 | CDMA 800, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat7 (Bands 1, 3, 5, 8) TD-LTE (Bands 34, 38, 39, 40, 41) VoLTE | LTE 800/850/900/1800/2100/2600 |
| Primary 5G network | Not supported | 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 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| 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 | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Back camera (main camera) | (triple camera) 12 megapixels 8MP ultrawide f/2.2 5MP depth f/2.4 | 16 megapixels |
| Main camera resolution | 4000x3000 pixels | 4608x3456 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | 13mm (lens) | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | HDR photo on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Front camera (secondary) | 25 megapixels | 5 megapixels |
| Front camera resolution | 5760x4320 pixels | 2592x1944 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3940 mAh | 4000 mAh |
| Charger, watts | 18W Wired fast charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | feature not registered | 45 hours (1.9 days) |
| Standby | feature not registered | 940 hours (39.2 days) |
➕ Other features | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
| 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: Ice black, Blue, Pink • 19.5:9 display ratio • Always On Display • FunTouch OS 9 • Motorized pop-up front camera | • Colors: Black, White, Gold • WiFi hotspot • Java framework |
☢️ Radiation rate | ||
| Vivo S1 (V1831A) | Lenovo Vibe Z2 Pro (K920) | |
| 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 |