If you use a vivo mobile phone, you can take the mobile phone and related purchase vouchers to the local vivo customer service center for rooting. The address and telephone number of the after-sales service center can be found in Settings-More Settings-After-sales Service, or you can go to vivo official website to find the address of the after-sales service center: /Service/map. html Tips: It is recommended to call the after-sales staff before going to the local after-sales service center to ensure that the staff will go during normal working hours to avoid a trip in vain.