The input method is only used to input characters in the character set, and it is impossible to input a "trademark logo" that does not exist in the international code super-large character set. This situation may be that the font is not supported, so you enter the theme style mixed font, try to change other fonts, and recommend you to modify Milan font and style;

If you change the Milan font, other fonts may not be recognized, so all the used Weibei can't see it, but Milan will see it;

How to make Baidu input method apply the modified sym file?

Put the modified sym.ini file in any location of the mobile phone memory card. As long as it can be found, the file name can be changed, but the suffix ini cannot be changed. Then Baidu Input Method Settings-Advanced Settings-Manage Symbol Files-are imported into the symbol file, and just find the ini file you just put in the pop-up menu, so that you can catch up with symbols randomly in the input method and integrate the modification of an operator.