In this article, let's talk a little about the range Bluetooth to Android. Some users may not be satisfied with the range of their Bluetooth module: for example, in a house, when the phone is behind three walls from you, your headset loses its connection with your smartphone. Many in such cases are looking for a solution to this problem, trying to find a way to increase the range Bluetooth by Android. We will talk about this in more detail in this article.
A bit of theory
The receiver itself operates in a frequency range of 2.4 – 2.48 GHz. It works like a regular radio communication, in which the data exchange rate, depending on the version of the receiver, can reach up to 721 Kb / s (in version 1.1), up to 24 Mb / s (in version 3.0 – 4.0).
As for the distance at which information exchange can take place, it can reach 50 meters, provided that the devices are in line of sight from each other, and about 10-20 meters in buildings.
Although the manufacturer claims that from version 3.0 of the module, the range can be 100 m, but this is most likely in ideal conditions: in fact, the coverage in these versions is at least 2 times less, that is, about 50 meters, again in line of sight.
As for the frequency amplification on the smartphone module, this option will not always solve the problem, since the communication between devices depends on both modules. To make it clearer for you: even if you manage to expand the range on the phone, the radius of successful operation with your headset will remain the same, due to the fact that the earpiece can find the smartphone at the same frequency as before.
Yes, the phone will be able to detect the headset at a greater distance than before, and even, perhaps, you can pair both devices, but the distance at which such a bundle will work successfully will not increase. Perhaps your voice from the microphone will reach the phone, but you will not be able to hear the interlocutor, or vice versa.
The result is such a combination: the phone can download data from the headset, but the headset does not have enough range of its module.
Therefore, if you want to increase the radius of work, you will have to work with two devices.
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What is required for this
Theoretically, to amplify the bluetooth, by analogy with overclocking the processor, you just need to apply more voltage to the module: we expect that there should be some kind of program, for example, Bluetooth range extender for Android, which would work with ROOT rights and do everything in a couple of clicks … but, sadly, there is nothing like this anywhere.
This is due to the fact that it is impossible to calculate the gain parameters suitable for all types of modules.
The situation is the same as with firmware: each device has its own firmware, and there is no universal firmware for everyone. This is because in the OS parameters, individual parameters for the components are set, and they are exactly those on which the components of your smartphone will work correctly.
Alternatively, you can extend the range by adding an antenna. If such an approach can still be assumed on a stationary PC, because there is a physical space where you can add this antenna, this method is simply inappropriate in a situation with a smartphone.
The last method, which, in our opinion, is the most successful is the purchase of a special flash card with a built-in function Bluetooth – a receiver. Such cards are similar in appearance and size to a regular SD-card, have different formats, and a communication module is also added to them (they also exist with Wi-Fi).
Initially, such cards were produced for devices where there is no built-in module, but in your case we recommend trying to insert them: perhaps Bluetooth in the card will be more sensitive than the one built into your device; there is still a possibility that the card module will have a newer version, due to which the range will be greater than in the built-in module installed in your phone.
Connecting the receiver is easy. You need to install it in place of a regular SD-card, after which the system must do everything itself (load the necessary drivers), then the parameters of the new Bluetooth device should appear in the settings.
These maps are not so easy to find here, so we advise you to look for them on a well-known Chinese site.
We hope that our article helped to solve your problem, or, on the contrary, justified the need to accept the situation as it is.
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