Do Japanese mobile phones not have text messaging capabilities? If I buy a mobile phone from Japan, will it have Chinese on it?

Japanese mobile phones have text messaging capabilities, but WCDMA ones

Japanese mobile phones have an important feature, which is that the phone and card are integrated. It means one machine, one number. Unless you have number writing equipment, which seems to be very expensive, even China Unicom's network cannot be used in China.

Japanese mobile phones do not support Chinese, only 3,000 commonly used Japanese characters