I play on my Samsung S20+ but I also have Minecraft on Switch.

On the switch, when I move between different items, in Style or Body it shows you what it will look like on your character. You can then "Equip" and when you go back you now have this body or style item.

On Android, when you move around Style or Body, nothing updates. And when you click "Equip" a message over your character reads "You just equipped the ..." but nothing changes and when you go back a screen, you are still just regular Steve.

I am logged into both with Minecraft account... sometimes if I click on any item that I have equipped on my Switch character there is no Equip button, but if I look at all other hairstyles I can click Equip (but nothing works). There is a certain timing or order in which this happens, it does not always happen.

If I click on a skin that I've purchased or gotten for free, it equips and is seen in-game.