Google Galaxy Nexus Android mobile technology platform 4.0 Users Guide - Manual (Page 78)

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Rename or secure your portable hotspot
You can change the name of your phone's Wi-Fi network name (SSID) and secure its Wi-Fi network
when it's acting as a portable hotspot.
1 Go to Settings > Wireless & networks > More > Tethering & portable hotspot.
2 Make sure Portable Wi-Fi hotspot is checked.
3 Touch Configure Wi-Fi hotspot.
The Configure Wi-Fi hotspot dialog opens.
4 Set your name and security options as follows:
Change the Network SSID (name) that other computers see when scanning for Wi-Fi networks.
Choose a security option. Choosing WPA2 PSK adds a password field to the Configure Wi-Fi
hotspot dialog. If you enter a password, you will need to re-enter that password when you connect to
the hotspot with a computer or other device. To remove security from your Wi-Fi network, choose
Open.
5 Touch Save.
Related topic
Manage notifications