I have ran into a problem. During the development of my first app I've tried my app on several devices. However, after working with my app for several weeks I did not try my app during the development on the "oldest" device I have. An iphone 6. And now when I try to start the first level of my app it crashes immediately. The current level I'm trying to enter is a static level where you scroll with your finger to navigate. The layout size is 6144x1536 consisting of 3 pictures that are 2048x1536 and another 3 pictures on top of that with the resolution 2048x1536 and then I have several smaller sprites imported. The viewport size is 1920x1080 for mobile and 2048x1536 on tablet.
I have come to the conclusion that my app needs to much memory of the device. And I guess that the biggest problem is the size of my pictures. When trying the game in the debug layout it stands that I have 742.5mb est. image memory.
I have exported all of the pictures in PNG24 but when I check the pictures they are only around 100-200 kb.
I have checked some of the guides here but I still can't find a working solution.
Is there anyone here who can recommend me how I can make my app not needing so much image memory? Can I somehow see which pictures that need most image memory?