What is the short message between Tianyi mobile phones?

Internet SMS: refers to sending and receiving point-to-point SMS between mobile users of China Telecom and users of other operators in Chinese mainland (including other PHS /PSTN users). Thank you for your interest in telecom products. I wish you a happy life. If the above information can't solve your problem, you can also log in to Guangdong Telecom Mobile Mall () to ask for help from online customer service, which is available 24 hours a day!