Samsung Galaxy S4 User Manual page 297

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 Home screen, press
Settings Connections tab
2. Press and then tap Advanced
during sleep.
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.
and then tap
Wi-Fi.
Keep Wi-Fi on
DRAFT
Internal Use Only
Check for Internet Service
Allows you to check for Wi-Fi Internet access once connected
to a WAP (Wireless Access Point).
1. From the Home screen, press
Settings Connections tab
2. Press and then tap Advanced.
3. Tap the Check for Internet service field to activate the
feature. A green check mark indicates the feature is
active.
and then tap
Wi-Fi.
Changing Your Settings 291