What does this memo do not support some devices? -Phone that can't be heard now

When I opened the memo with the iOS 15 memo app, the message saying "This memo does not support some devices" is displayed? That is the "tag" or "motion" in that memo.Because it is used.

The tag here is a character string (hashtag) in a format called "#○○○○", which continues to be a Sharp symbol.The basic use is the same as SNS such as Twitter, and use it when you want to classify notes.If you insert it in an appropriate position in the text, it will be useful when you want to display notes in the same genre/category together.

Another "Music" is a function that directly notifies a specific person the change in the change.If you enter "@", the name of the notes will be displayed as a candidate at the top of the keyboard, so if you select it, the notification that "Mr. XX will mention you" will be sent to the other party with the content written in the Metment.。

A memo that contains "tags" or "Metment" is displayed with iOS 15 memo apps that do not support these functions (iOS/iPados 14).5 before, macOS 11.If you use one 3 or earlier with the same Apple ID, you will be warned that "this memo does not support some devices."

In fact, notes that contain tags or men are not displayed in non -compatible systems.It will be displayed when the relevant tag is deleted/shared, but if you own an iPhone/iPad or Mac that may exchange notes because it is a source, go to the latest system.It is safer to update.