Iphone 15 pro max battery life vs samsung s23 ultra July 8, 2019 16 32 64 128 Iphone 15 pro max vs s23 ultra Iphone 15 pro max vs samsung galaxy s24 ultra Iphone 15 pro max vs s22 ultra Iphone 14 pro max vs s23 ultra battery Iphone 15 pro max vs samsung s23 ultra camera test