Login is not possible on lower OS (iOS 11, 12).

[HEROHJK]

Is it a security issue?

No

What did you do?

Login using Line SDK does not work on iOS 11, 12.

What did you expect?

normal login

What happened actually?

Login does not work in iOS 11 and 12 environments. After entering the ID and password, a blank screen appears. It looks normal from iOS 13 onwards, and internal tests show that a similar issue occurs on Android 5.

Your environment?

xcode 14.x, iOS 11 and 12 iPhone models. LineSDK 5.8.2, and Line SDK 5.9.1 for later testing also succeeded in reproducing the issue. (However, the xcode version seems meaningless. The previous App released last year also came back and checked again, and it is impossible to log in the same.)

Sample project

We used the sample project provided here and leave a reproduction video.

vllo.mp4

[onevcat]

Thanks for reporting this. We are aware of this issue and now starting to investigate what is going on. I will provide feedback as soon as we can find anything!

[onevcat]

@HEROHJK

Thanks for the report. I think we have already found the reason and it seems to be a front-end regression in a recent release. My frontend colleagues are now working on a patch for this issue, and we will release it after passing our verification.

There should be no additional work for your side, however, during the period, the end users who hold iOS devices running iOS 12.1 and earlier might not be able to log in with LINE account. We are very sorry for the inconvenience it might cause!

[HEROHJK]

@onevcat

Got it.
I'll wait for the update, but could you let me know again when you're done?

Thank you so much for your quick response!

[onevcat]

Sure. I will keep this issue open and ping you again when we can make the release happen!

[onevcat]

@HEROHJK We have made some progress to allow the page work on iOS 12. However, for iOS 11 and earlier, there are several other issues and we are now still working with them.

[HEROHJK]

@onevcat Ohhh. I see, I'll give it a try.
Also, this issue is still being monitored

[onevcat]

@HEROHJK

Sorry for having you waiting this long!

We believe this issue should be already solved on iOS 11 too. Can you give it another try?

[HEROHJK]

Yes, hello.

I tried Line SDK Login on an iOS 11.4.1 device a while ago and it worked great.

Thank you for solving the problem and for your kind and quick response~!

I'll close the issue!