Go to phone settings-System Management/More Settings-About phone or go to settings-My device-More parameters, and check the phone version:
1, origin OS/iQoUI and Funtouch OS 4.0 and above: Go to Settings-Display and Brightness-Font Size/Font Size and Thickness-Drag the indicator bar left and right to adjust the font size.
2. Before 2.Funtouch OS 4.0: Settings-Wallpaper and Font-My Font/Local Font-Font Size/Top Right A.
Some software, such as WeChat, browser, etc. , you 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.
For more questions, please enter vivo official website-My-Online Customer Service-Enter manual consultation online customer service feedback.