Android SMS is hidden in the application information.

Landlord, your question is whether the SMS system has been replaced by third-party software.

Then you can't open it with the SMS function that comes with the system.

If this is the problem, it is the default application settings of your mobile phone.

Look for it in the application management and change it back to the original one.

If you can't find it, you can also download a default application manager from AppBao.

With this software, you can set almost all default applications on your mobile phone.

Just change the default SMS application to the original system.

If you are satisfied with the answer, please accept it.