Meizu mobile phone deleted the SMS dialog box, how to restore it?

I suggest you brush the latest stable firmware first and see if it can be solved. You can clear the data when you brush. You can search and download the corresponding firmware at the following website,/firmware.jsp. Among them, the stable firmware has fewer bugs, runs stably, and the latest experience firmware has more functions. Please download as needed. After downloading the firmware, update it according to the following methods. 1) Copy the firmware to the root directory of the memory card->; Shut down-> Press the power and volume keys at the same time to enter the system upgrade mode; 2) Check the system update (if it is necessary to clear data, check the clear data at the same time), and click to start the system upgrade; 3) When upgrading the system, please don't turn it off; 4) After the system upgrade is completed, the mobile phone will start automatically; 5) Enter the system settings-> Regarding the mobile phone, check the software version. If it is the selected version, the firmware upgrade is successful.