Engadget JP reporter Takahiro Koguchi did the duty of running his iPhone XR test unit down into Express Card power reserve mode and running it through a transit gate. It works great. I wonder how many hours of Pokemon play it took Koguchi san to run into power reserve mode with the longer battery life of iPhone XR? Even on iPhone XS at 35% battery it took me 2 hours of Pokemon and 4 cups of Beck’s coffee until power reserve mode kicked in.
I covered the iPhone XS Apple Pay Suica Express Cards with power reserve feature in my earlier video. If anything the shorter battery life of iPhone XS means that Express Cards with power reserve might actually come in handy as Apple Pay Suica still works for transit, purchase and cash recharge for up to 5 hours.
Come to think of it the new 7-Eleven ATM Suica cash recharge service might actually work better/faster with Apple Pay Suica Express Card in power reserve mode as the pesky and unnecessary Touch ID/Face ID step is removed. If I have a day of Pokemon and Beck’s coffee to run my iPhone XS battery down and try it out, I’ll let you know.
7-Eleven ATM Apple Pay Suica Recharge is not Express Card savvy. You have to use Touch ID/Face ID and put Suica in the manual ready state like an Apple Pay credit card.
The reader stand on the right of the touchscreen is designed for plastic cards with the NFC hit area at the bottom of the stand. This means you have to put iPhone on the stand upside down for Apple Pay Suica to work. It’s very awkward.
The process is not that fast.
The service is OK but nothing more. Suica cash recharge at the JR station or the convenience store cash register is a faster deal, and the convenience of Apple Pay Suica Recharge always beats cash recharge. The main benefit is that 7-Eleven ATMs are plentiful, open 24 hours and offer Suica cash recharge during the Mobile Suica late night maintenance offline hours 1am~4am.
But it’s a dilemma for iPhone X users in Japan who have yet to obtain a Revision B iPhone X exchange for problem iPhone X devices: to upgrade or not to upgrade, to put up with the Apple Support hassle of getting an exchange for a Rev-B iPhone X or not. If you can get a good ‘as is’ iPhone X trade-in price from a carrier upgrade program, the iPhone XS/XR Apple Pay Suica performance is a huge step up from a problem iPhone X device. You won’t believe the difference.
If you plan to sell the device in Japan on an auction site like Yahoo Japan here are a few tips for getting a better price based on my experience:
Get an Rev-B iPhone X exchange as you can get a better price advertising a ‘just like new’ exchanged device. You can also advertise the ‘manufactured after April 2018 Rev-B iPhone X Suica problem free’ aspect as that has recognition value in Japan and nowhere else.
If the iPhone X is a Japanese carrier model A1902 make sure the carrier SIM lock has been removed which is easy to do. For Docomo iPhone X models also make sure the ‘Docomo Network Limitation‘ has been removed as well. You can check device status on the Docomo web site and request limitation removal. List the IMEI number in the product description so that potential buyers can check it for themselves.
Tokyo Metro Smart Charge Kiosk service starts October 2 in major stations on the Ginza line
Tokyo Metro has followed the JR East lead and joined the recharge bin brigade. Starting October 2 Smart Charge Kiosk machines are being installed at major stations along the Tokyo Metro Ginza line and will expand out from there.
The operation is exactly the same as the JR East Smart Charge kiosks. Put iPhone or Apple Watch in the charge bin, select the bill you want to add: 1,000-5,000-10,000 and the Smart Charge kiosk does the rest.
A12 Bionic NFC powers the new Express Cards with power reserve on iPhone XS/XR
Global FeliCa Apple Pay added NFC-F support as required for NFC Forum certification and FeliCa which powers Apple Pay Suica, the new Contactless Student ID Cards in iOS 12 use NFC-A MIFARE
Anybody reading this blog is undoubtably confused by the endless discussion of Apple Pay Suica errors and problems. Here is some explanation to help you understand them and how A12 Bionic in iPhone XS and iPhone XR solves them.
Apple Pay Suica problems are not problems with FeliCa technology. The problems are caused by the way Apple implements FeliCa technology on their hardware. Instead of using a real FeliCa chip from Sony, Apple created a virtual FeliCa chip on the A-Series chip with per device unique keys licensed from FeliCa Networks.
Apple’s custom implementation of FeliCa on the Apple Pay platform is clever and cost-effective in many ways but there are downsides:
iOS/watch OS has to be running for Apple Pay Suica to work. Japanese Android devices with FeliCa chips can still use Suica when the battery runs down.
Different iOS/watchOS versions affect Apple Pay Suica performance in good ways, and bad ways.
Apple Pay Suica Express Card Software Problems
Wireless radio technology like NFC, WiFi, Bluetooth and cellular is a delicate balance of software and hardware that often seems like a black art. A small code tweak or tiniest hardware flaw can easily upset the balance and wreak havoc. Remember the ‘you’re holding it wrong’ iPhone 4 anntenagate crisis? Like that.
Occasional iOS versions have caused Apple Pay Suica Express Card performance problems:
The iOS 10.1 Apple Pay Suica debut release worked pretty well but occasionally tripped up at transit gates, slamming them shut and forcing a re-read. By iOS 10.3 Apple Pay Suica performance was great.
The Apple Pay Cash iOS 11.2 release made life miserable for all Apple Pay Suica users. Apple fixed it with the iOS 11.2.5 update.
It’s happening again with the iOS 12.0/iOS 5.0 debut release. iPhone 8, Revision B iPhone X, Apple Watch 3/4 users are experiencing unresponsive Express Cards or just good old error flicker (Suica error correction algorithms on JR East transit gates are truly amazing BTW). Apple iOS engineers are on it and Apple Pay Suica performance bug fixes are due in the iOS 12.1 update.
The A12 Bionic Difference
This kind of Suica, “iOS loves me, iOS loves me not” version by version game is a consequence of Apple requiring iOS to operate Suica on pre-A12 Bionic devices. iPhone XR/XS users do not have Suica problems on iOS 12 thanks to the new A12 Bionic architecture and Secure Enclave that powers Express Cards with power reserve. Here is what we know so far:
The iOS Security Guide for iOS 12 shows the A12 Secure Enclave and Secure Element layer residing in the kernel/firmware layer that does not need iOS to be running, it also says “the NFC controller performs express card transactions under the same conditions as when iOS is running.”
The superior performance of Apple Pay Suica on iPhone XR/XS suggests that the A12 Secure Enclave and Secure Element layer loads FeliCa keys and code and uses them not only in power reserve mode but also for regular mode Express card operation completely removing all the iOS overhead and interaction for basic Suica operations. It is much closer to how a Suica smartcard works. This makes iPhone XS Apple Pay Suica ‘bulletproof’ to any given iOS version. It just works, even when the battery runs down.
Apple Watch Series 4 still uses the ‘OS has to be running scheme’ as the Apple S4 does not support Express Cards with power reserve. I think the Apple Chip design team must be working on a S-Series chip that will have the same features of the A12 Bionic Secure Enclave and Secure Element architecture. Express Cards with power reserve and bulletproof Suica will be a great selling points for Apple Watch in Japan when it arrives.
Most of this explanation is about FeliCa and Apple Pay Suica but the same methods can be used for all other middleware stacks: Express Cards with power reserve work with Apple Pay Transit in China.