A wireless communication network provides a text-messaging service and a voice-calling service to wireless communication devices. The wireless communication network monitors performance of text-messaging functions and voice-calling functions. The wireless communication network prioritizes the text-messaging functions and the voice-calling functions based on their performance. The wireless communication network transfers function lists that prioritize the text-messaging functions and the voice-calling functions by their performance. The wireless communication network wirelessly exchanges text-messaging signaling and voice-calling signaling between the wireless communication devices and the text-messaging functions and the voice-calling functions. Individual ones of the wireless communication devices exchange the text-messaging signaling with selected ones of the text-messaging functions based on the function list that prioritizes the text-messaging functions by their performance. Individual ones of the wireless communication devices exchange the voice-calling signaling with selected ones of the voice-calling functions based on the function list that prioritizes the voice-calling functions by their performance.