In Samsung galaxy s9, we can not lock individual apps.like gallery and payment apps. That feature is available in other Samsung phones but why not available in their top flagship s9+.
Thanks for being with Samsung and sharing your concern. We would like to inform you that you can use Secure Folder application in your device to hide the data and application of your device. 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#/
I can use secure folder, but what if I want to lock my main app. Also add a feature that can lock any entire file category. e.g. If I want to secure my images then any image can not be open by any application. Now if I lock gallery then gallery is secure but image can be open through file manager or even through any other app, I can not manage every app to secure and I can not put every single image in secure folder. Do work on that.
