•Does your Wi-Fi network use the WEP security option? If yes, you must enter the passcode in hex characters on your smartphone instead of in alphanumeric characters. You can locate the hex passcode by logging into the Wi-Fi router. The router has several hex passcodes; you must locate and use the passcode associated with the key index. Because each router has a unique method to perform this task, consult your router documentation for detailed instructions.
•Does your Wi-Fi network use MAC address filtering? MAC address filtering is a common method of securing a Wi-Fi network. The filter list is similar to a guest list at a party; if you're not on the list, you can't come in. The filter list (allowing access to your network) lives on your Wi-Fi router. If your Wi-Fi network uses MAC address filtering, you need to log in to the Wi-Fi router and add your smartphone's MAC address to the access control list. Because each router has a unique method to perform this task, consult your router documentation for detailed instructions. To find your smartphone's MAC address: Open Device Info
and tap More Info. The MAC address is the Wi-Fihex number under Phone.
•Restart your smartphone (see Restart your smartphone).
I can't make a Wi-Fi connection from a public or corporate network
For help with data connections over your wireless service provider’s network, see I can’t make a data connection over my wireless service provider’s network.
•Turn off Wi-Fi and then turn it on again (see Turn Wi-Fi on/off).
•If the smartphone does not automatically connect to a known network, do one of the following:
•Select the Wi-Fi network you want to connect to from the list.
•If you're trying to connect to a secure network with a hidden name, ask the system administrator for the info needed to connect to the network.
•If you're not trying to connect to a secure network with a hidden name and there are no Wi-Fi networks detected, there are no Wi-Fi networks available for the smartphone to connect to. Try moving to another location and attempting the connection again.
•Try connecting to the Wi-Fi network with another computer or device.
•If you cannot connect using the other device, there may be a problem with the Wi-Fi network's Internet connection or wireless router. Report the problem to the system administrator.
•If you can connect with the other device, but not with the smartphone, continue with the next step.
•Does the Wi-Fi network use the WEP security option? When using the WEP security option, you must enter the passcode in hex characters on your smartphone instead of in alphanumeric characters. The hex passcode is stored in the Wi-Fi router software. Work with the system administrator to locate the passcode associated with the key index.
•Does the Wi-Fi network use MAC address filtering? MAC address filtering is a common method of securing a Wi-Fi network. The filter list is similar to a guest list at a party; if you're not on the list, you can't come in. The filter list (allowing access to the Wi-Fi network) lives on the Wi-Fi router. This list is maintained by the system administrator and you must provide the administrator with your smartphone's MAC address and request to be added to the list. To find your smartphone's MAC
address: Open Device Info 
and tap More Info. The MAC address is the Wi-Fihex number under Phone.
•Restart your smartphone (see Restart your smartphone).
I am trying to connect my smartphone to my Wi-Fi network and need to find the smartphone's MAC address
Open Device Info 
, tap More Info and tap Hardware. Under Phone, the number listed to the right of Wi-Fi is your smartphone's MAC address.