How to change the font size?

For vivo mobile phones, you need to first enter Settings-System Management/More Settings-About the Phone or enter Settings-My Device-More Parameters to check the mobile phone version:

1. OriginOS 3, OriginOS Ocean, OriginOS/iQOO UI and Funtouch OS 4.0 and above systems: Go to Settings--Display and Brightness--Font Size/Font Size and Thickness--You can drag the indicator bar left and right to adjust the font size

2. Before Funtouch OS 4.0 system: Settings--Wallpaper and Fonts--My--Fonts/Local Fonts--"Font Size/A" in the upper right corner

Some software such as: For WeChat, browsers, etc., the font size can be adjusted independently in the settings within the software. If the adjustment in the i theme does not work, you can enter the application settings to operate.

If you have more questions, you can enter the vivo official website--My--Online Customer Service--Scroll to the bottom--Online Customer Service--Enter manual customer service for consultation.