Don't work with MAC addresses MAC addresses are globally unique, not user-resettable, and survive factory resets. For these reasons, it's generally not recommended to use MAC address for any form of user identification. Devices running Android 10 (API level 29) and higher report randomized MAC addresses to all apps that aren't device owner apps.
A Media Access Control address (MAC address) is a 12-character unique identifier assigned to a specific piece of hardware such as the network adapter of your WiFi device. In simple words, a MAC address can be used to uniquely identify your Android phone on the Internet or the local network. Using Windows 10: Connect to a network. This method is only applicable if you are currently.
Mac Id For Android Phone
Starting in Android 8.0, Android devices use randomized MAC addresses when probingfor new networks while not currently associated with a network. In Android9, you can enable a developer option (it'sdisabled by default) to cause the device to use a randomized MAC addresswhen connecting to a Wi-Fi network.
In Android 10, MAC randomization is enabled by defaultfor client mode, SoftAp, and Wi-Fi Direct.
MAC randomization prevents listeners from using MAC addresses to build a historyof device activity, thus increasing user privacy.
Additionally, MAC addresses are randomized as part ofWi-Fi Aware andWi-Fi RTT operations.
Implementation
To implement MAC randomization on your device:
Work with a Wi-Fi chip vendor to implement the following HAL methods:
IWifiStaIface#setMacAddress
: Configures the MAC address of theinterface. The default implementation brings the interface down, changesthe MAC address, and brings the interface back up.IWifiStaIface#getFactoryMacAddress
: Gets the factory MAC ofwlan0
using anioctl
call.ISupplicantP2pIface#setMacRandomization
: Sets P2P MAC randomizationon/off in the supplicant.
Set
config_wifi_connected_mac_randomization_supported
totrue
in the Settingsconfig.xml
(this can be done in a devicecustom overlay).- This flag is used to control whether client-mode MAC randomization isenabled.
Set
config_wifi_p2p_mac_randomization_supported
totrue
in the Settingsconfig.xml
(this can be done in a devicecustom overlay).- This flag is used to control whether Wi-Fi direct MAC randomization isenabled.
Test your implementation using the methods described inValidation.
The System UI must:
- Have an option to enable or disable randomization for each SSID.
- Have MAC randomization enabled by default for all newly added networks.
Mac Id For Android Phone
Starting in Android 8.0, Android devices use randomized MAC addresses when probingfor new networks while not currently associated with a network. In Android9, you can enable a developer option (it'sdisabled by default) to cause the device to use a randomized MAC addresswhen connecting to a Wi-Fi network.
In Android 10, MAC randomization is enabled by defaultfor client mode, SoftAp, and Wi-Fi Direct.
MAC randomization prevents listeners from using MAC addresses to build a historyof device activity, thus increasing user privacy.
Additionally, MAC addresses are randomized as part ofWi-Fi Aware andWi-Fi RTT operations.
Implementation
To implement MAC randomization on your device:
Work with a Wi-Fi chip vendor to implement the following HAL methods:
IWifiStaIface#setMacAddress
: Configures the MAC address of theinterface. The default implementation brings the interface down, changesthe MAC address, and brings the interface back up.IWifiStaIface#getFactoryMacAddress
: Gets the factory MAC ofwlan0
using anioctl
call.ISupplicantP2pIface#setMacRandomization
: Sets P2P MAC randomizationon/off in the supplicant.
Set
config_wifi_connected_mac_randomization_supported
totrue
in the Settingsconfig.xml
(this can be done in a devicecustom overlay).- This flag is used to control whether client-mode MAC randomization isenabled.
Set
config_wifi_p2p_mac_randomization_supported
totrue
in the Settingsconfig.xml
(this can be done in a devicecustom overlay).- This flag is used to control whether Wi-Fi direct MAC randomization isenabled.
Test your implementation using the methods described inValidation.
The System UI must:
- Have an option to enable or disable randomization for each SSID.
- Have MAC randomization enabled by default for all newly added networks.
Use thereference implementation of Settings UI to implement new prompts.
Mac Id For Android Phone
Devices running Android 9 or lower might not havesupport for Wi-Fi MAC randomization. When upgrading such devices to Android10, the Wi-Fi MAC randomization feature can be disabledby setting the WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
flag to true inthe Wi-Fi vendor HAL make file.
Validation
To validate that the feature is working as intended, run both an integrationtest (ACTS) and a manual test.
To run an integration test, use the ACTS file,WifiMacRandomizationTest.py
, located intools/test/connectivity/acts/tests/google/wifi
, to verify that the device usesthe randomized MAC address and correctly stores the randomized MAC address foreach network.
To run a manual test:
- Verify that MAC randomization is enabled on the device by checking that
config_wifi_connected_mac_randomization_supported
is set totrue
in thedevice overlay. - Connect to a Wi-Fi network.
- Tap the network to go to the Network details page. Verify that MACrandomization is turned on. Verify that the MAC address displayed is arandomized MAC, which has the locally generated bit set to 1 and themulticast bit set to 0.
- Turn MAC randomization off. Connect to the same network and verifythat the factory MAC is being used.
- Delete the network by tapping Forget on the Network details page.
Connect to the same network and verify that the same randomized MACaddress is being used.
Note: Randomized MAC addresses are generated per SSID and are persistent.
To test MAC randomization on a pre-Android 10 device(capable of supporting MAC randomization) upgrading to Android10 or higher:
- Have at least one saved network on a device runningAndroid 9 or lower.
- Flash the Android 10 system image.
- In the Wi-Fi picker, verify that MAC randomization is turned off for allsaved networks.
- Turn MAC randomization on. Connect to the same network and verifythat the randomized MAC is being used.
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This example demonstrate about How to get current Wi-Fi mac address in android.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
In the above code, we have taken text view to show WIFI mac address.
Step 3 − Add the following code to src/MainActivity.java
Step 4 − Add the following code to androidManifest.xml
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –
Click here to download the project code