Samsung Galaxy S III User Manual page 258

Network Notification
By default, when Wi-Fi is on, you receive notifications in the
Status bar anytime your phone detects an available Wi-Fi
network. You can deactivate this feature if you do not want to
receive notifications.
1. From the main Settings page, tap Wi-Fi.
2. Press and then tap Advanced.
3. Tap Network notification. A check mark displayed next
to the feature indicates Network notification is active.
4. Tap Network notification again to remove the check
mark and deactivate this feature.
Wi-Fi During Sleep
By default, when your device enter a sleep mode, your Wi-Fi
connection stays on all the time. If the feature is Never
enabled during sleep that current data usage is taken over by
your SIM and its network connection.
1. From the main Settings page, tap Wi-Fi.
2. Press and then tap Advanced
sleep.
252
Keep Wi-Fi on during
3. Select an available option:
• Always: maintains your current active Wi-Fi connection even
during sleep.
• Only when plugged in: maintains the active Wi-Fi connection
only when the device detects it is connected to a power supply.
This reduced the drain on your device's battery.
• Never (increase data usage): shuts off the current Wi-Fi
connection during sleep and diverts any current data usage to
the cellular network connection.
Check for Internet Service
Allows you to check for Wi-Fi Internet access once connected
to a WAP (Wireless Access Point).
1. From the main Settings page, tap Wi-Fi.
2. Press and then tap Advanced.
3. Tap the Check for Internet service field to activate the
feature. A green checkmark indicates the feature is
active.