What is a broken mobile phone think tank?

The font is a well-programmed mobile phone, where the whole running program of the mobile phone is stored. Font library may cause the phone to crash, get water, download wrong software or program paralysis when carrying virus software, that is, the font library is broken. If it's a software problem, it takes 30 to get to 40 yuan, and it takes about 60 to search for love. If you change the font, it depends on the model, usually around 50~80.