Why is there a hidden reminder in the SMS after the upgrade of ios 1 1?

After downloading third-party apps such as Tencent Mobile Manager, you can cooperate with Apple to detect possible spam and isolate it in a separate folder.

Knowledge expansion:

IOS 1 1 is an operating system developed by Apple. On the morning of June 6th, 20 17, Beijing time, the Apple Developers Conference WWDC 20 1 7 was held at the McKern Li Convention Center in San Jose, California, USA, and the Apple system iOS 1 1 was officially unveiled.

The official version of iOS 1 1 was updated and upgraded with the release of the new iPhone in September 201July.

On September 20th, 20 17, the official version of iOS 1 1 was released. The specific added functions are: QR code scanning, fraudulent short message recognition, pinyin keyboard, and Shanghai dialect speech recognition. On September 26th, one week after the release of iOS 1 1, Apple released an upgrade package and the latest version of the system iOS11. The new version aims to correct various software problems in the previous version.