Samsung Galaxy S 5 User Manual page 258

Set Up Hotspot
1. From home, tap Apps
2. Tap the ON/OFF slider to turn Hotspot on.
 Hotspot is enabled.
To disable Hotspot, tap the ON/OFF slider again.

Note: The best way to keep using the phone as a hotspot is to have it connected to a power supply.
Important: Write down the passkey (password) for this communication (shown onscreen).
Connectivity
> Settings > Hotspot.
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