Setup a password on your Wi-Fi hotspot isvery important, because nowadays everyone looked for a free Wi-Fi hotspot and if you don’t want to share your internetwith other peoples so set a password on your Wi-Fi.
Go to Settings>>Wireless & Networks>>Tethering & Portable hotspot>>Wi-Fi hotspot>>Setup Wi-Fi Hotspot>>Enter password and Name
How to set password on Your Wi-Fi Hotspot
