How do I turn off tethering on Android?

Tap the “Off” icon.

Go to “Menu” and tap “Settings” and select the “Wireless & Networks” menu.

Under “Portable Wi-Fi Hotspot” slide the icon to the “Off” option to complete the process.

Can I turn my phone into a hotspot without paying extra?

In fact, there is no need to enable a hotspot service using your cell phone carrier. A feature known as Wi-Fi tethering will automatically transform your smartphone into a wireless internet router. Even without a data connection, you can still turn your old smartphone into a Wi-Fi hotspot.