I send text messages with Android. When sending a text message, the mobile phone will always pop up a prompt box to say yes or no. How could it not pop up?

That's because the safety management software that comes with the machine prompts you. Before clicking Allow, you can check whether there is a check option, which should be called "Always Trust". Select it, and then click Allow. After that, as long as you don't uninstall the SMS software, you should not be prompted again. If you uninstall and reinstall, it will still pop up, which is often encountered in debugging software. Good luck!