Samsung SGH-T679DBWTMB - Manual (Page 182)

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To secure the Portable Hotspot service:
The two most common methods for securing
your connection to the Hotspot are to a security
method (WPA2 PSK) and to Hide your phone’s
SSID name.
1. Press ➔ and then tap
(Settings) ➔ Wireless and network ➔
Tethering and portable hotspot ➔ Portable
Wi-Fi hotspot settings ➔ Configure portable
Wi-Fi hotspot.
2. Tap the Security field and select WPA2 PSK.
3. With security enabled, enter a new
password into the Password field.
Important! The more complex the password, the
harder it will be for intruders to break
your security. It is recommended that
you not use names, birthdays, or other
personal information.
4. Tap Save to store the new settings.