These are some widespread myths about Bluetooth but that are completely false or have become obsolete.
Bluetooth is a technology that is many years old, but despite this, there are still many myths about this technology, based on ancient facts or directly invented.
These are 5 myths about Bluetooth that you shouldn’t ignore.
Having the Bluetooth on uses a lot of battery
Although it is true that with the first versions of Bluetooth, keeping it activated used up a lot of battery, it has been a long time since that happened. Previously, if you had Bluetooth activated, it would constantly search for devices to link to, in the same way that when WiFi was activated, the phone constantly searches for networks to connect to.
However, since version 4.0, Bluetooth is LE (Low Energy) and thanks to this it allows search for devices consuming very little energy, and can be kept linked without consuming energy. Ultimately, since Bluetooth 4.0, the technology only spends a significant amount of energy transmitting data.
Bluetooth interferes with WiFi waves
Both WiFi and Bluetooth waves normally operate in the 2.4 GHz band, and therefore it would be logical to think that some interfere with each other. But just like before, since the arrival of Bluetooth 4.0, things changed a lot, and that is that from that Bluetooth version it has adaptive frequency change.
This means that, within the frequencies of the 2.4 GHz band (2400 to 2483.5 MHz), Bluetooth can detect which frequency is free and operate on it, and even quickly switch from one frequency to another without obstructing the data transmission process.
Bluetooth has a short range
There is a myth that the range of Bluetooth is so small that it only works inside small rooms, but while it is true that it has a limited range, it is much larger than people think. Depending on the type of Bluetooth your device has, it has a different range:
- Bluetooth Class 3: less than 10 meters range.
- Bluetooth Class 2: 10 meters range.
- Bluetooth Class 1: 100 meters range.
Although most non-powered devices connected to power use Bluetooth class 2 or 3, its range is similar to that of WiFi Direct, technology that is used many times for a supposed range superior to that of Bluetooth that does not really exist.
Bluetooth is harmful to your health
The fact that the waves emitted by smartphones are harmful to health is something that the scientific community does not fully agree on, but which is certainly not proven; at least for now. In any case, and assuming that the waves were harmful, the impact of Bluetooth will be negligible.
In theory, if that radiation damage is real, it would be greater or less depending on the power with which the waves are sent. In Bluetooth that power rarely exceeds 1 mW, something completely irrelevant compared to 1000 or even 2000 mW of 4G.
Bluetooth is safe as long as you are not visible
Bluetooth is and has always been a very interesting technology in concept but with many flaws in its implementation. One of his biggest problems is his high vulnerability to attack who wants to connect to your device.
It is typical to think that, as long as you are not visible, no hacker can find you and therefore never access your device. But this is very naive thinking: hackers have ways of find your device while Bluetooth is on, even if you are not visible.
If you really want to make Blutooth safe, the best thing you can do is keep it off and have a good pin for when you are using it.