How to reduce the font size of messages after SMS is turned on?

If you use a vivo phone, you can refer to the following processing path when the text font becomes larger:

The font of SMS interface can be enlarged and reduced independently (without affecting the font size of the system).

When the font of the short message becomes larger, you can open the information details interface, hold down the screen with two fingers and slide relatively (the two fingers slowly approach) to reduce the font.

Note: OriginOS/Funtouch OS 9. 1 and later versions do not support this function.

The reason for this is the following：

1, the font size is the uniform size of the system, and the font size of the system can be uniformly adjusted in the settings.

2. You can double-click the information copy to enter the full-screen enlargement page to view the enlarged font. -It is recommended to view the content in large font like this.