No sooner than Apple issued the iOS 12.1.2 update that JR East pushed out a Suica system notice in their iOS Suica App: When Suica Balance Fails to Update. I guess this really means that Apple still hasn’t fixed iOS 12 Apple Pay Suica performance issues for everybody. My experience with iOS 12.1.2 on iPhone XS has been good so far but it takes time to find out what Suica performance on any iOS release really is. Whatever the case may be, fixing dead Suica notifications and a lost Suica Balance is very simple.
Put Suica in Service Mode and let your device sit for 10~15 seconds, then quit Apple Pay or simply put the screen to sleep. A Suica Notification will then appear with the updated Suica balance. Let’s hope that Apple’s New Year resolution list includes quickly fixing Apple Pay Suica performance issues.