Why does iPhone so popular in your mind?（你认为iPhone手机为什么这么受欢迎?）

I don't think so,most of my friends are using Android.那个……对不起，但是很抱歉，我想问的是在你看来，iPhone手机为什么受欢迎？I believe it's because apple innovated and worked/spend much money on advertising. Now I believe their innovation is gone and they haven't don't much in way of new ideas. The reason many people buy it would mainly be because of its popularity and many apps/sleek design in my opinion.Thank you～