vivo S1 (China)
The vivo S1 (China) is a balanced everyday device, powered by the Mediatek MT6771 Helio P70 (12 nm), suited to light-to-moderate use (2019).
2019 · Lower-mid-range · Android 9.0 (Pie)ⓘ Grades compare this device against others in its own market segment (Mid-range), not against every device on the site.
⚡ Quick Specs
Size6.53" · 162 x 76 x 8.5 mm (6.38 x 2.99 x 0.33 in)
ChipsetMediatek MT6771 Helio P70 (12 nm)
RAM4GB | 6GB
Storage128GB
Main Camera12 MP · LED flash
⚖️ Compare With
✓︎ Pros
✓6.53" IPS LCD display with accurate colours and wide viewing angles
✓3.5mm headphone jack for wired audio without adapters
⊗ Cons
✗Entry-level Mediatek MT6771 Helio P70 (12 nm) — struggles with demanding apps
✗12 MP main camera — basic quality, limited for photography enthusiasts
⚠️ Not ideal for
Mobile gamingHeavy multitaskingPhotography
ℹ️ Overview
Announced
2019, March. Released 2019, April
Also Known As
Not to be confused with Vivo S1 for Global marketVersions: V1831A, V1831T (China)
⚙️ Performance
Chipset
Mediatek MT6771 Helio P70 (12 nm)
Mid-range — handles daily tasks well
CPU
Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
OS
Android 9.0 (Pie), Funtouch 9
RAM
4GB | 6GB
Fine for everyday apps
💻 Display
Sharpness
395 ppi
Sharp and comfortable to read
Panel
IPS LCD
IPS: accurate colours, good brightness
📷 Camera
Main Camera
12 MP
Capable for everyday photos
Multi-Camera Setup
12 MP, f/1.8, 13mm (ultrawide), PDAF 8 MP, f/2.2, (wide) Auxiliary lens
🔋 Battery
Capacity
3,940 mAh
Adequate for moderate use
📱 Design & Build
Weight
189.5g
Balanced size and weight
Dimensions
162 x 76 x 8.5 mm (6.38 x 2.99 x 0.33 in)
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
📶 Network
Speed
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat7 300/50 Mbps
2G Bands
GSM 850 / 900 / 1800 / 1900
📡 Connectivity
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
❓ Frequently Asked Questions
No, the vivo S1 (China) does not support 5G — it supports GSM / CDMA / HSPA / LTE.
No, the vivo S1 (China) does not have NFC.
No, the vivo S1 (China) charges via cable only — no wireless charging.
Yes, up to 18W (18W wired).
Yes, the vivo S1 (China) supports microSDXC expandable storage.
The vivo S1 (China) SIM configuration: Nano-SIM + Nano-SIM.
Yes, the vivo S1 (China) has a 3.5mm headphone jack.
Speaker setup: Yes.
The vivo S1 (China) ships with Android 9.0 (Pie), Funtouch 9.
The vivo S1 (China) uses microUSB 2.0.
The vivo S1 (China) supports Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct.
The vivo S1 (China) has 5.0, A2DP, LE.
