In some stations now there are some entry points that use "standard" visa touchless payments that can be used now I think.
Your android phone likely doesn't have the right NFC tech that iPhones have (google Felica, it's a separate NFC standard used basically only in Japan. Apple builds it into all of their iPhones, most android phones outside of Japan do not). It's mostly just a case of divergent tech, along with Apple being willing to spend money to avoid SKU differentiation/support people traveling in Japan.
Your android phone likely doesn't have the right NFC tech that iPhones have (google Felica, it's a separate NFC standard used basically only in Japan. Apple builds it into all of their iPhones, most android phones outside of Japan do not). It's mostly just a case of divergent tech, along with Apple being willing to spend money to avoid SKU differentiation/support people traveling in Japan.