https://atadistance.net/2018/01/25/rating-apple-pay-suica-performance-in-ios-11-2-5/
Japanese Apple Pay Suica users and iPhone X users are tweeting and blogging about the Apple Pay Suica performance improvements in the iOS 11.2.5 update. So far the reports are very good. But how good is good and can it be even better?
Read the article for the dazzling details. My anecdotal experience is that watchOS/iOS is working well with Suica. None of the momentary failures and seems more spritely in paying.