I definitely prefer the IOS phones than any other type of phones. Although they are very expensive, it is definitely worth the price.
And I definitely prefer Android. There is no sense to buy an expensive phone with iOS when I can have 10x better specs with this money.
But out uf those main categories of phones there also subcategories, so it depends with one's preferences too.
Windows phone is now officially dead. Iphone and the Android are the only one that are left. And I am guessing in near future there won't be any new options either as it would be waste of time.
I've played games both on Android and windows. I like it on Android because the phone is a small device and it's easy to carry it while playing at the same time. On windows, I have to make use of the keyboard and mouse and this spoils the fun especially since I'm not used to playing with both hands. I do understand there are phones with windows version and that's cool.