![](/images/new-backgrounds/1144549/14454979x1.webp)
entertainment
features
manage certificates
Enable or disable Internet access certificates stored on your phone:
s> wSettings > Security > Certificate Mgmt
Certificates are used to verify the identity and security of Web sites when you download files or share information.
airplane mode
You can switch your phone to airplane mode to prevent it from communicating with the network. This lets you use games or other applications while you are on an airplane, without interfering with airplane communications.
Note: Your phone cannot make Bluetooth® connections when Airplane Mode is on.
s> wSettings > Airplane Mode > Airplane Mode > On
You can make the airplane mode option appear whenever you turn on your phone:
s> wSettings > Airplane Mode > Prompt At Power Up > On
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