VIVO S1 is a great and very suitable smart phone in mid-range.The camera quality is too good to capture amazing images and videos. It has also good battery backup.It comes with a huge and massive storage.
The vivo S1 mobile is provided with a 16.21 cm screen display.It comes with the resolution of 1080×2340 pixels and runs on Andriod v9.0 operating system.It is powered by Octa core(2 GHz,Dual core,Cortex A75+1.7 GHz,Hexa Core,Cortex A55) processor paired with 4 GB of RAM.So all these features make this phone an amazing one with in the budget.

Now talking about the battery,the device is provided with battery of 4500mAh.This much powerful battery again makes it one of the best phones in its range.
Vivo S1 is provided 16MP+8MP+5MP Triple Rear & 32MP Front Camera.The smartphone is packed with 4 GB and 8 GB, 1866 MHz with 128 GB and 256 GB internal storage.
Vivo S1 supports microSD, microSDHC, microSDXC memory cards slot for expansion.The smartphone is powered by Qualcomm Snapdragon 710 processor.

The phone comes with Dual SIM card ,Nano-SIM, and Nano-SIM OR microSD.Battery is Li-Polymer non-removable and it supports fast charging.
It has in-display fingerprint sensor,Gyroscope,Light,Proximity,
Accelerometer ,and compass.

  • SPECIFICATIONS:

Brand                                                  Vivo

Model                                                    S1
Form factor                                        Touchscreen
Dimensions (mm)                            159.53 x 75.23 x8.13
Weight (g)                                          179.00
Battery capacity (mAh)                   4500
Colours                                              Skyline Blue, Cosmic Green
Screen size (inches)                        6.38
Resolution                                         1080×2340 pixels
Processor                                           octa-core
Processor                                           make MediaTek P65
RAM                                                     4GB
Internal storage                               128GB
Rear camera                                     16-megapixel (f/1.78) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4)

Front camera                                     32-megapixel (f/2.0)
Operating system                              Android Pie
Skin                                                      FunTouch OS 9
Wi-Fi                                                   Yes
GPS                                                     Yes
Bluetooth                                            Yes, v 5.00
USB OTG                                            Yes

  • There are two Number of SIMs 2:
    SIM 1:
    SIM Type: Nano-SIM
    SIM 2:
    SIM Type: Nano-SIM
  • There are number of sensors in Vivo S1:
    Fingerprint sensor                           Yes
    Compass/ Magnetometer               Yes
    Proximity sensor                              Yes
    Accelerometer                                   Yes
    Ambient light sensor                       Yes
    Gyroscope                                          Yes

The expected price of VIVO S1 is 17,990 rupees .
So, we can conclude that VIVO S1 is good choice with the mid-range of 15,000 to 20,000 rupees.