•Restart your smartphone (see Restart your smartphone).
Wi-Fi
I can’t make a Wi-Fi connection from my home network
For help with data connections over the AT&T network, see I can’t make a data connection over the AT&T 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, select your Wi-Fi network from the list. If the smartphone does not detect your Wi-Fi network, continue to the next step.
•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 your Internet connection or wireless router. Unplug the modem and the wireless router and reboot the modem. Once the modem re-establishes an Internet connection, plug in the wireless router and try connecting again. If you still can't connect with the other device or computer, contact your Internet Service Provider.
•If you can connect with the other device, but not with the smartphone, continue with the next step.
•Does your Wi-Fi network use a compatible router? The smartphone is compatible only with 802.11b and 802.11g wireless protocols and cannot connect to an 802.11a or 802.11n network unless it is backwards compatible with 802.11b/g.
•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 the AT&T network, see I can’t make a data connection over the AT&T 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 a compatible router? The smartphone is compatible only with 802.11b and 802.11g wireless protocols and cannot connect to an 802.11a or 802.11n network unless it is backwards