Thank you for reaching out to the Samsung community! We would like to inform you that the play store may be opening automatically due to the ads coming on the device. Some time tapping on ads open the play store application.
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#/
