[MagnumForceGB]

When you have the Hero3 on, click the Mode button till you see a wrench icon. Push the shutter button (top red circle) to go to the menu, then put the mode button till it goes to wireless controls. Push the shutter button again then use the mode button to select Phone & tablet option then push the shutter button. Give it a few seconds and it will turn on, your blue LED should flash. Now on your phone, go turn your wi-fi on and scan for wireless points. You should see your hero camera (the name you gave it during the setup when its hooked up to the computer). Connect to it with your phone. Now launch the GoPro app.

Hopefully this helps, I can make a video of how I do it, but I have a HTC Evo LTE.