I dont like vivo just because they only provide you with good camera thats it vivo mobile hang so much and since its a china company its not reliable although its battery backup is good and 6gb ram is aws and internal storage is 64gb however it comes with unremovable battery just like every news phone.
it is only available in two colours blue and neon purple. there is no led flash in front camera
no dedicated memory card slot.
qualco. m snapdragon 660 is good chipset but customers expects minimal qualcomm snapdragon new series chipset.
being china mobile it does not value for money at all.