Why does my mobile phone always remind me that Lenovo address book is not the default SMS application? I set it and it didn't respond.

Open Settings, select Apply, enter Installed Program Management, and find the name of the program you open by default. The default value has been cleared. Please select the opening method. The address book DEFY contains two programs that can manage short messages.

(1) Open the settings, select Apply, enter the installed program management, and find the name of the program that is opened by default. The default value has been cleared. Please select the opening method. The address book DEFY contains two programs that can manage short messages.

(2) If this method doesn't work, then you can uninstall the address book software, reinstall it, set the privacy rights with the menu key, restore the factory settings, and then you can modify it.

Lenovo Group was founded in 1984, with an investment of 200,000 yuan from Institute of Computing Technology, Chinese Academy of Sciences,1/scientific and technical personnel. Now it has developed into a large-scale enterprise group and an innovative international technology company with diversified information industry composed of Lenovo and the former IBM personal computer division. Lenovo mainly produces desktop computers, servers, notebook computers, printers, palmtop computers, motherboards, mobile phones, all-in-one machines and other commodities.