Differences Between Bluetooth & Wi-Fi
Bluetooth is used
for short distance wireless connections through a radio signal scattered in
different frecuencies which makes it more resilient against interference.
Transmit power is very low, ideal for small devices like bluetooth mini
keyboards.
Wifi
on the other side uses more power to transmit and thus needs a specific antenna
to dissipate such power as radio waves. You cannot operate a wifi device
(like a wireless router) without an antenna (or the correct antenna) because
you will end up with a burned out wifi device, as the transmit power will
have no way to radiate as radio waves and will heat up the device until it
breaks down. Even those routers that don't have any antennas popping out of
their casing, got them inside !
Summary:
1. WiFi is used to wirelessly connect computers to a network while Bluetooth is used to wirelessly connect two devices to each other
2. WiFi is used largely in computers and PDAs while Bluetooth is widely used in mobile phones
3. WiFi radios are more powerful than it Bluetooth counterparts
4. WiFi has a lot more bandwidth than Bluetooth
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