Is there any change in the length limit of mobile SMS in China?

hello, when the short message written by your mobile phone exceeds 7 Chinese characters, the system will automatically send it in strips. It is suggested that you can change the phone to try the card and put the card on other mobile phones to test whether the same problem occurs. If not, it means that your mobile phone SIM is normal, that is, some settings on your mobile phone have been changed. If this problem still occurs when changing the phone to try the card, it is suggested that you call 186 to respond and ask the support staff to verify the status of your mobile phone card.