Vivo s1 is good better and a worth it phone it is very good to buy and using it daily also goes to the person recommdations and it is also a very good phone and I love it after using this vivo s1 phone we all know that vivo is a chinese brand but vivo has taken a space in our all hearts so now a days all are using vivo phone rather than others phones and it also gets gpod reviews by its users because it has many featers in less and cheap amount I also hasa more features rather than others phone so I last I say it is worth phone