Basicly your router box will have it's own wireless password/key and If you find your router settings program on your computer,somewhere in them settings It will display your password/key. You need to copy this down on your smartphone settings where it asks for the password/key once you have searched and found your network on the smartphone. Save it and it should connect. It's hard to go through the full set up with you as you have not mentioned what router you have and what smartphone you have. If you can't find your network when searching for it it may be that you have not enabled your router to give out it's wireless signal.