Vivo y21 is th best phone for android users becuse the y21 phone is dual sim and is 4g also and vivo company service also good so is the very smart phone for andorid user and vivo y21 is chraging very fast its android version also good and vivo customer services is nice vivo y21 phone for comfert phone for middle class and it price was good not very high and this vivo mobile phone’s handphone was very good phone’ s sound quality was very nice and its white color look was awosme and it ram speed was very nice