Wifi functionality

Does anyone knows if the wifi networks for android phones are based on Access Point Names (APN) 开发者_如何学C? I ask because in my android application I plan to overwrite some fields in all APN's to disable cellular network, but I still want to have available the wifi for the user

AFAIK, WiFi is independent from APN settings, i.e., if you mess with the APN settings WiFi will still work (cf. the APNdroid application).