Android is good for sharing apss, movies, music, games etc. with other android users. Android is a lot more cheaper, both-to purchase and accesorize. Android is customizeable to the smallest detail and as a result its also very useful for learning and professional developers.
But
If you own an iphone, you would end up using it only in the time you really need it. I mean to say that in case case you are trying to control usage of phone and need to get other things done, iphone is better as it offers less of a distraction. I personally would prefer an iphone for the sole reason of using it less
it has been a long time since I got an Android, but on a security point of view they are now the same if you choose Samsung or LG or Sony. Huawei, Xiaomi and other low cost smartphone are usually crap when it comes to security...