Thank you for reaching out to the Samsung community! We do apologize to inform you that flipboard cannot be change to Google assistant as it is the default feature of the device. However you can disable the flipboard by long tapping on the home screen>>swipe right>>on the flipboard right top corner disable the toggle.
Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
