Wi-Fi and Bluetooth are the technologies that are used in wireless devices. The purpose is to connect devices and transfer data from one to another. These wireless technologies are used in mobiles, Laptops, desktops, printers and video games.
Bluetooth has a facility to transfer data between two devices without wires or cables. The connectivity length should be shorter distance of maximum 10 meters.
The straight forward technology is Bluetooth. Using Bluetooth a person can connect headset with computer MP3 player, printers, computer keyboards, mouse. Bluetooth never need security precautions or any accessories like Wi-Fi cards, passwords, etc.
The cost of implementing a Wi-Fi network is greater than implementing a Bluetooth network. Bluetooth technology is the latest technology when compared to Wi-Fi technology, which is three years older. Wi-Fi technology spread all over the world and Bluetooth technology is maintained by Bluetooth special interest group.
Wi-Fi covers more than 100 feet distance. The user from different area can access Wi-Fi connectivity. Both the devices are connected via radio waves. The bandwidth and energy used by Wi-Fi is is of higher range then Bluetooth.
Thus, both have some similarities and huge differences. These two technologies are used world wide to connect either two devices are to chat with other people without using any visible connectivity.
Yes, if your device i.e mobile is having internet facility, you can use that on your laptop by connecting them via Bluetooth with DUN(Dial Up Network).