According to Unity3D’S manual, when developing for iOS Use iOS native PVRT compression formats. They will not only decrease the size of your textures (resulting in faster load times and smaller memory footprint), but also can dramatically increase your rendering performance! Compressed texture requires only a fraction of memory bandwidth compared to full blown 32bit RGBA textures. You can use Unity’s built in PVRTC compression, … Continue reading Mini Tutorial: How to batch convert image files to PVR (for iPhone app development)?