What is bluetooth device class

How do I know the class of my Bluetooth?

Using the Bluetooth APIs, an app can perform the following:

• Scan for other Bluetooth devices.
• Query the local Bluetooth adapter for paired Bluetooth devices.
• Establish RFCOMM channels.
• Connect to other devices through service discovery.
• Transfer data to and from other devices.
• Manage multiple connections.

What is Class 1 wireless Bluetooth?

Formal. Class 1 Bluetooth offers a greater wireless data transfer distance (over 100m, up to 1km) through using greater power consumption (100mW). Primarily for industrial use cases, as it has a very long range. Primarily for industrial use cases, as it has a very long range.

How use Bluetooth step by step?

Step 1: Pair a Bluetooth accessory

1. Swipe down from the top of the screen.
2. Touch and hold Bluetooth .
3. Tap Pair new device. If you don’t find Pair new device, check under “Available devices” or tap More Refresh.
4. Tap the name of the Bluetooth device you want to pair with your device.
5. Follow any on-screen instructions.

What are different classes in Bluetooth?

To communicate over the 10 meter range, a class 1 or class 2 device is required at both ends. Note: Class 3 devices are uncommon due to their very limited range….What is Bluetooth Class?

BT Class	>Maximum Power	Operating Range
Class 1	100 mW (20 dBm)	100 meters
Class 2	2.5 mW (4 dBm)	10 meters
Class 3	1 mW (0 dBm)	1 meter

What are the Bluetooth profiles?

Below is a list of Bluetooth Profiles:

• Advanced Audio Distribution Profile (A2DP)
• Audio/Video Remote Control Profile (AVRCP)
• Common ISDN Access Profile (CIP)
• General Audio/Video Distribution Profile (GAVDP)
• Generic Object Exchange Profile (GOEP)
• Hard Copy Cable Replacement Profile (HCRP)

What is Bluetooth example?

An example of a Bluetooth device is a cell phone headset. An example of a Bluetooth device is a wireless mouse. The standard wireless network for short-range transmission of digital audio and data. Bluetooth is also an IEEE personal area network (PAN) standard (see 802.15).

What apps use Bluetooth?

16 Best Bluetooth apps for Android

• Auto Bluetooth.
• Bluetooth App Sender.
• Bluetooth Files Transfer.
• Bluetooth Headset Battery.
• Bluetooth Auto Connect.
• Bluetooth Pair.
• Bluetooth Files Share.
• Apk Share Bluetooth.

What is the Bluetooth range on a phone?

The distance, at which the information can be exchanged, can reach 50 meters, if the devices are in direct line of sight of each other, and 10-20 meters in buildings. Although the manufacturer claims that version 3.0 of the module can reach up to 100 m, but the conditions have to be ideal.

What are Bluetooth enabled devices?

Bluetooth-enabled consumer electronics such as phones, cameras, televisions, speakers and headphones simplify data sharing between devices. A Bluetooth mobile phone, for example, can wirelessly connect to a headset to make hands-free calling easier or can send pictures to another phone or computer.

What is needed to use Bluetooth?

Bluetooth works using short-range radio waves, not an internet connection. This means that Bluetooth will work anywhere you have two compatible devices — you don’t need any sort of data plan, or even a cellular connection.

How to use bluetoothdevice class in Android app?

This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. Get the Bluetooth device type of the remote device. Creates and returns a copy of this Object. Connect to GATT Server hosted by this device. Start the bonding (pairing) process with the remote device.

How to get Bluetooth adapter for Android device?

Get the default BLUETOOTH Adapter for this device. Returns the unique instance of Class that represents this object’s class. The handle to the underlying Android instance. This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.

How to get the Bluetooth name of a remote device?

Get the Bluetooth class of the remote device. Get the bond state of the remote device. Returns the unique instance of Class that represents this object’s class. The handle to the underlying Android instance. Get the friendly Bluetooth name of the remote device.

How to create a bluetoothadapter in a service?

I tried to do it in a Service but failed. BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter (); startService (new Intent (this, MyService.class)); enter code here

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What are the bluetooth device classes of android phones?

For my application i make a bluetooth discovery search to list all available bluetooth device in. If I’m in a room with a lot of computers etc, there is a really long list. So I’d like to filter Android phones from the lists. I read the documentation under: http://developer.android.com/reference/android/bluetooth/BluetoothClass.Device.html and http://developer.android.com/reference/android/bluetooth/BluetoothClass.Device.Major.html So I’m able to filter some devices like laptops, computers, etc. Does anybody know what are the possible constants which android phones can have? I don’t want to risk to filter too many devices, but I also want to limit the list to only Android devices. Any hints?

2 Answers 2

Bluetooth service classes are standardized. Depending on which bits are present in the class, you can detemrine whether the device is a computer or not. In fact, the class can expose a lot of useful information about each decice.

Have a look at the manpage for hcid.conf. This page describes how the class is built:

As stated in the above doc:

Example: class 0x02hhhh : the device offers networking service Major device class allocation:

0x00: Miscellaneous 0x01: Computer (desktop,notebook, PDA, organizers, . ) 

1. Android phones aren’t in discoverable mode by default. So chances are, none of your discovered devices will ever be Android devices unless you have initiated discoverable mode on a device.
2. Many phones can determine the RSSI (signal strength) of discovered devices. This information is passed to your app during discovery as a bundle extra . Nearby devices will generally have a higher RSSI than distant devices. So you can also filter by «how close the device is».
3. The Bluetooth MAC used for various devices will be of certain ranges. The first three bytes of the Bluetooth MAC corresponds to the Hardware Vendor. There are many vendors, but most of them don’t make bluetooth hardware for phones. So you could also filter by Bluetooth MAC — if it falls within a known range, it’s probably an Android.

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What is Bluetooth class of device?

In Bluetooth, “class” refers to the three levels of power for Bluetooth devices: Class 1, 2, and 3. The following table compares power and range of these three classes: BT Class. >Maximum Power. Operating Range.

How do I know my Bluetooth class?

1 Answer. Most phones use Class 2 Bluetooth devices. If you know the exact device name / model we can find the class of device by looking up the bluetooth qualification details – it will list the chip in use and its device class.

What is a Class 3 Bluetooth device?

Class 3 devices (such as are in PDAs, phones, headsets, etc) transmit a very low power signal (1 mW) and only transmit intermittently when in standby mode, saving even more power.

Why do mobile phones use Class 2 Bluetooth?

Class 2 Bluetooth enables short-range wireless data transmission (10-20m), which has a low power consumption of around 2.5mW. Most commonly found in mobile devices. Most commonly found in mobile devices.

What is UUID in Bluetooth?

An ‘uuid’ is a Universally Unique Identifier (UUID) standardized 128-bit format for a string ID used to uniquely identify information. It’s used to uniquely identify your application’s Bluetooth service.

What’s Bluetooth range?

approximately 30 feet
The range of the Bluetooth® connection is approximately 30 feet (10 meters). However, maximum communication range will vary depending on obstacles (person, metal, wall, etc.) or electromagnetic environment. NOTE: Not all audio devices are supplied with Bluetooth capability.

What is a Class 2 Bluetooth device?

A Class 2 Bluetooth device refers to the specification of the chip used inside the device. Class 2 devices will have a power rating of 2.5mW (milliwatts) and an operating range of approximately 10 to 20 metres. A Class 1 device will have a range of up to 100 metres and a Class 3 device has a range of 1 metre.

What version is my Bluetooth?

Step 2: Now Tap on Phone Settings. Step 3: Tap on App and Select the “ALL” Tab. Step 4: Scroll Down and Tap on Bluetooth Icon named Bluetooth Share. Step 5: Done! Under App Info, you will see the version.

Can Bluetooth go through walls?

Myth: Bluetooth Can’t Go Through Walls Think about when you’re trying to hear someone in the next room. But radio waves can still pass through objects, even concrete walls and floors, meaning that a Bluetooth® signal is not limited to the room you’re in.

What is the range of Bluetooth on a phone?

10 meters
The effective range of your Bluetooth is 10 meters. You are advised to perform all Bluetooth operations while keeping your phone within a 10 meter radius from your other Bluetooth device(s). This distance may vary according to the environment in which you use these devices.

How do I get a UUID?

The procedure to generate a version 4 UUID is as follows:

1. Generate 16 random bytes (=128 bits)
2. Adjust certain bits according to RFC 4122 section 4.4 as follows:
3. Encode the adjusted bytes as 32 hexadecimal digits.
4. Add four hyphen “-” characters to obtain blocks of 8, 4, 4, 4 and 12 hex digits.

Which is an example of a bluetoothadapter class?

This example provides demonstration of BluetoothAdapter class to manipulate Bluetooth and show list of paired devices by the Bluetooth. To experiment with this example , you need to run this on an actual device.

How to use bluetoothdevice class in Android app?

This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. Get the Bluetooth device type of the remote device. Creates and returns a copy of this Object. Connect to GATT Server hosted by this device. Start the bonding (pairing) process with the remote device.

Is there an app for Bluetooth on Android?

The Android platform includes support for the Bluetooth network stack, which allows a device to wirelessly exchange data with other Bluetooth devices. The application framework provides access to the Bluetooth functionality through the Android Bluetooth APIs.

How does Bluetooth work between two Android devices?

In order to connect two Android devices, one device must open a server socket with this class. When a remote Bluetooth device makes a connection request to the this device, the BluetoothServerSocket will return a connected BluetoothSocket when the connection is accepted. Describes the general characteristics and capabilities of a Bluetooth device.

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