With my iPhone, which is not NFC enabled, the connection is reliable. Wifi on the camera must be on and the transfer to phone icon selected. During the initial setup, a password code will be given. On the phone, you have to pick up the Canon wifi network, and enter the code. Once the network is selected and checked, you can open the Canon app. It takes several seconds before it finds the connection, but it will then activate.
if this does not work, which happened after the last update, simply reset your wifi setup on the camera, and forget your network on the phone. Then start the setup from scratch and it should work.
