1) we first get the ROOT permission for the mobile phone, then Baidu downloads a "RE file manager" and installs it on the mobile phone, and then we prepare a new font for the vivo x3l, the suffix of the font file is. ttf format.
2) then we changed the font name to DroidSansFallback. ttf in the computer. The case and the file name should be exactly the same. Otherwise, the phone will not recognize the font name.
3) copy DroidSansFallback. ttf to the SD card of your mobile phone. (As shown in the following figure)
4) then use the downloaded "file manager" to open the system/fonts of the mobile phone, and then replace the font in the computer with the DroidSansFallback. ttf in the mobile phone, and then set the permission.
5) Finally, we replaced vivo x3l and restarted it. After the phone was restarted, we will find that the font has been modified. Is it very simple.
The 111cn editor reminds you: In fact, we can change the font of the system directory to another method. First, change DroidSansFallback. ttf in the mobile phone to a name. In this case, we only need to change the font to a new one.