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How to increase the font of mobile phone if it is too small?

If you are using a vivo phone, please go to phone settings-System Management/More Settings-About phone or access settings-My device-More parameters, and check the phone version:

1, Origin OS/iQoUI and Funtouch OS 4.0 and above (except Funtouch 9.2 system): Settings-display and brightness-font size;

2.Funtouch 9.2 system: settings-desktop, screen lock and wallpaper-font size;

3. Before 3.Funtouch OS 4.0: Settings-Wallpaper and Font-My Font/Local Font-Font Size in the upper right corner.

Some software, such as "browser", can adjust the font size independently in the internal settings of the software. If the adjustment in the I topic is invalid, you can enter the application settings to operate.