Does Chuxiong mobile phone number need to add 86 to send text messages to Kunming?

No need. According to Sohu.com's information, the prefix of all users' SMS numbers in China is +86 (excluding service numbers such as 10086, 100 10), which is automatically added by the SMS service center. Just like calling a phone with an area code, domestic calls don't need to add an area code, so you don't need to add 86 to Chuxiong's mobile phone number to send a text message to Kunming.