Thank you for reaching out to the Samsung community! We would like to inform you that if you have taken the backup of messages then only you can restore it else there is no way to retrieve the deleted data.
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#/
