This will happen automatically if you have connected an Ethernet Cable to your A7080. Alternatively, connect to a Wi-Fi Network when prompted as part of the Initial Setup.
To connect follow these Steps:
01: Press the HOME button on the Remote Control.
02: Select the Wi-Fi Symbol, in the top-right of the Home Screen.
03: Select your Wireless (Wi-Fi) Access Point under Available Networks
04: Type your Password on the 'Enter password for (Your Network)' Screen.
NOTE: The on-screen Keyboard may vary with different Menu Options, Device Model, and installed Software Version. In some cases, the Keyboard displays Upper Case Letters in the top row, followed by Lower Case Letters, than Numbers and Symbols. Wi-Fi Passwords are case sensitive. If the Keyboard doesn't display both Upper and Lower Case Letters, select the Up-Arrow on the on-screen Keyboard to toggle between Upper Case and Lower Case.