What is WiFi Hotspot?
WiFi Hotspot is a technology that provides internet access over WiFi to other devices. It means that you can use your Phone’s data connection to provide internet access to other devices connected to the WiFi Hotspot set up on your phone. It is most useful when you are travelling and want to access internet on your laptop. You can set up WiFi Hotspot on your phone and access it on your laptop by connecting to the WiFi set up by your mobile device. Android has inbuilt feature to set up a WiFi Hotspot. Wifi Hotspot is available on android on Froyo onwards ( 2.2+ )
Note: Be very careful while using WiFi Hotspot on Roaming as it will cost you extra charges on Roaming to use data connection.