Web and Data 88Important! 4G service must be added to your account before attempting a connection to the 4Gnetwork.Depending on which icons appear within the Notifications area, your services and features willchange. The following table indicates what functions and features are available whencombinations of these service icons appear:Icon Description3G Coverage: The phone is connected to the Sprint 3G network. The arrows arecolored when data is being transferred.4G Coverage: The phone is connected to the Sprint 4G network. The arrows arecolored when data is being transferred.Virtual Private Networks (VPN)From your phone, you can add, set up, and manage virtual private networks (VPNs) that allowyou to connect and access resources inside a secured local network, such as your corporatenetwork.Prepare Your Phone for VPN ConnectionDepending on the type of VPN, you may be required to enter your login credentials or installsecurity certificates before you can connect to your company’s local network. You can get thisinformation from your network administrator.To connect to a VPN, you must have Mobile data enabled, or your phone must be connected toa Wi-Fi network. For information about setting up and using these connections on your phone,see Data Usage and Turn Wi-Fi On and Connect to a Wireless Network.Set a Screen LockBefore setting up a VPN, you must set a screen lock to prevent access to your phone byunauthorized users. Pattern, PIN, or password screen locks provide sufficient security to set uptrusted credential storage.1. Press and tap > Settings > My device tab.2. Tap Lock screen > Screen lock.3. Choose a screen lock, from Pattern, PIN, or Password.4. Follow the prompts to configure the screen lock. For more information, see Screen Lock.