Network

Use the Network settings to configure a VPN (virtual private network) connection, access Wi-Fi settings, or turn Data Roaming on or off.

Enable or disable 3G: 

Tap to turn 3G on or off.

Using 3G loads Internet data faster in some cases, but may decrease battery performance. If you’re making a lot of phone calls, you may want to turn 3G off to extend battery performance.

Turn Data Roaming on or off: 

Choose General > Network, then turn Data Roaming on or off.

Data Roaming turns on Internet and visual voicemail access over a cellular data network when you’re in an area not covered by your carrier’s network. For example, when you’re traveling, you can turn off Data Roaming to avoid potential roaming charges. By default, Data Roaming is turned off.

Turn Internet Tethering on or off: 

Choose General > Network > Internet Tethering, then turn Internet Tethering on or off.

Internet Tethering lets you share iPhone’s Internet connection with a computer connected via USB or Bluetooth (not available in all regions). Follow the onscreen instructions to complete the setup. Additional fees may apply. See Using iPhone as a Modem.

Add a new VPN configuration: 

Choose General > Network > VPN > Add VPN Configuration.

VPNs used within organizations allow you to communicate private information securely over a non-private network. You may need to configure VPN, for example, to access your work email on iPhone.

iPhone can connect to VPNs that use the L2TP, PPTP, or Cisco IPSec protocols. VPN works over both Wi-Fi and cellular data network connections.

Ask your network administrator which settings to use. In most cases, if you’ve set up VPN on your computer, you can use the same VPN settings for iPhone.

Once you’ve entered VPN settings, a VPN switch appears in the Settings menu that you can use to turn VPN on or off.

VPN may also be automatically set up by a configuration profile. See Installing Configuration Profiles.

Change a VPN configuration: 

Choose General > Network > VPN and tap the configuration you want to update.

Turn VPN on or off: 

Tap Settings and turn VPN on or off.

Delete a VPN configuration: 

Choose General > Network > VPN, tap the blue arrow to the right of the configuration name, and tap Delete VPN at the bottom of the configuration screen.