Per @jakir.me recommendation to use iPhone SE 3rd generation and then resizing it, you can use this Figma template to help you do the resizing. Figma is free and you just need to drag and drop the image and resize it to fit the template frame and that's it.
Figma Template Link: https://www.figma.com/community/file/1321322901942263853/appstore-iphone-5-5-template
Happy publishing to app store all 🙌