And in addition to internet access, these devices can be configured to exchange information
between them by creating a network. And depending upon the surrounding environment, wifi has a range anywhere from 100 - 300 feet. So what are the differences between bluetooth and wifi? Well, the main difference is that bluetooth is for connecting devices to each other to exchange data. And wifi is used to connect devices to the internet. And another difference is the range and speed. Bluetooth has a slower transfer rate and a shorter range and the reason for this, is power. Bluetooth uses less power than wifi. So even though it sacrifices in range and speed, it also has an advantage with longer battery life with less frequent charging which allows bluetooth devices to be manufactured in a smaller size that doesn't require large batteries. But wifi on the other hand, is faster than bluetooth and has an approximate 10x longer range. Now both bluetooth and wifi operate at 2.4 GHz. But the thing is, a lot of other devices also operate at 2.4 GHz, such as microwaves and cordless phones  |
Bluetooth and WiFi |
and this could interfere with wireless signals. But bluetooth is less vulnerable to interference because it uses a technology called Frequency Hopping Spread Spectrum, which uses a method of transmitting signals in a pattern that only the transmitting and receiving devices know. The signal hops between 79 different channels and changes channels 1,600 times per second. Which makes bluetooth highly resistant to interference when compared to wifi. And bluetooth devices are also simpler to connect to because there's no password required. So for example, let's say you wanted to pair bluetooth earbuds to your cell phone. You would just power on the earbuds and then turn on bluetooth on your cell phone. Then in your device settings on your phone, you just click on earbuds when they appear and then you're connected.
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