iOS 12.1.1 國外似乎出現災情了

今天爬了一下...國外似乎有災情
不少人升級到12.1.1後4G data連線會有災情
有解法是透過電信業者更新設定檔...
Ref.
1.
https://www.forbes.com/sites/gordonkelly/2018/12/08/apple-ios-12-1-1-release-iphone-xs-max-xr-problem-4g-cellular-data-not-working/#5397c0d850e3
2.
https://mobile.twitter.com/mr_parthpatel/status/1070389187445051392
3.
https://piunikaweb.com/2018/12/07/heres-a-workaround-for-jio-users-facing-data-issue-after-ios-12-1-1/