What's wrong with the lack of memory on the mobile phone display to receive short messages?

When the memory of the mobile phone reaches a certain limit, the mobile phone will prompt that the memory of the mobile phone is not enough, and it is recommended to manage the application. At this time, if there is a short message, you will be prompted, and there is not enough memory to get it. At this time, you can move some software to the memory card or uninstall some unused software as you said. But when we uninstall, the phone still prompts that there is not enough memory. When the phone reflects for a period of time, it will display the memory correctly. If not, the correct memory will be displayed after shutdown and restart. (The premise is that after you delete the software, it is really lower than the memory limit of the mobile phone).