Not sure about android, but first time I went to Japan I managed to install Suica app on my iPhone, that added Suica card to the wallet. So now I can pay with Suica and also top it up using apple pay. Only downside is that Suica app is all in Japanese, but there are guides online that explain what to press.
In Japan right now. I didn’t even have to install anything, just went to Apple Wallet, add card, selected Suica, and then could create and load up a card. Plus it gets set up as an express transit card so I can tap my locked phone to pay for transit or snacks (even when it’s dead). Super pleasant experience.
Just checked my phone, and yea there is an option to do it via Wallet, even easier. I’ll show this to my colleagues if I go there again someday.
Some googling revealed that apparently all iphones starting from version 8 support nfc-f/felica.