Is its RAM management, which is absolutely atrocious! After you use Android for a while, it's not surprise that a 1GB iPhone can provide you with the same user experience and the same amount of application and tab reloads as an Android phone with 3GB RAM. You can be listening to music and if you use Chrome, Android will kill the music app! How bad is that? After you use Chrome for a while and go back to homescreen, you'll be greeted with a blank canvas... because Chrome forced the homescreen out of RAM and it has to reload. I won't even consider an Android flagship with RAM less than 4GB.