Hello
You want to change these images in the App
1. an icon image with size 2732 X 2732
2. a main_logo image of any size
3. a splash image with size 2732 X 2732.
Icon image is the app icon for mobile.
refer:http://prntscr.com/hb500k
And splash image is the image which shows up while the app is loading in the beginning .you might have seen it on our demo app: http://prntscr.com/hb4yup
main_logo image has appeared when you click on the home button check this: https://prnt.sc/nua0n1
So go to your app folder and in the resource folder, you should change the splash and the icon image.