Six months of Apple Pay Suica has worked great for me but a few Japanese users have recently tweeted that Suica screen notifications sometimes stop working with iOS 10.3.1 and 10.3.2. I encountered the issue recently but the fix is simple.
First of all despite all appearances, Suica keeps working just fine for transit and purchases. It’s just that Apple Pay Suica sound and screen notifications stop working. The Suica balance on the screen does not update after Apple Pay Suica recharging or store purchases. Don’t worry, Suica really is working fine, it’s just a notification thing. The fix is easy.
Restart iPhone. Open Wallet and go to the Suica preferences section that you use to recharge Suica. Scroll down and tap: Turn On Help Mode (ヘルプモードをオンにする).
This brings up TouchID verification to turn on Suica help mode. Do that and the screen confirms that Suica help mode is on. That’s it. After a few seconds Suica Apple Pay notifications will be working fine with the correct balance and all transactions properly displayed.
Suica help mode is a one minute mode designed to help you if Suica is unresponsive and the station gate does not let you through. Help mode forces Apple Pay Suica into card emulation mode. After turning it on there’s nothing more you need to do, after one minute Apple Pay automatically reverts to normal operating mode.
iOS 11 fixes this problem.