If you want to use your Canon 70D with a wifi connection, enable your camera’s wifi. When you get to the choice of camera access point and infrastructure mode, choose infrastructure mode. The 70D’s network list will then pop up with all of the wifi hotspots near you. Click on your wifi connection and then type in the password. Once that is done, you should be set for your camera.
Now go to your phone, make sure that you are connected to the same wifi, of course, and then launch the EOS remote app, and click on the bottom button that says camera connection and it should detect your camera. Click that and have fun!