There are two kinds of handwriting fonts you said. If mobile phone handwriting is not mainly the function of WeChat, but the function of input method, then we can only set the handwriting thickness in the input method, such as Baidu input method, Iflytek input method, sogou input method, etc. Let me use sogou input method to demonstrate the sogou input method I use here:
Sogou input method version is the latest 1 1. 10.0.
1. Type a word in the input method first, it's really thick. We need to enter the settings in the lower left corner to change the thickness (as shown in the figure below):
2. Adjust the handwriting thickness (as shown in the figure below):
3. It can be seen that it is indeed more refined (as shown below):