To add a frame to a picture on your Samsung device, you can follow the below steps:
1. Open the Gallery app or the Photos app on your Samsung device.
2. Select the picture that you want to add a frame to.
3. Tap on the 'Edit' button or the 'Pencil' icon on the screen.
4. Various editing options will appear. Tap on the 'Frames' option.
5. Select the frame you want to use from the list of available options. You can scroll through the list to see more options.
6. Adjust the frame by dragging it to fit the picture if required.
7. Tap on 'Save' or 'Save as copy' once you are satisfied with the changes.
Alternatively, you can also download a photo editing app from the Google Play Store, like Canva or Pixlr, which has more customizations options for adding frames to your pictures.