Build  |  API reference  |  Android Developers
Archived: 2026-04-05 16:59:26 UTC
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public class Build
extends Object
Information about the current build, extracted from system properties.
Summary
Fields
public static
final String
BOARD
The name of the underlying board, like "goldfish".
public static
final String
BOOTLOADER
The system bootloader version number.
public static
final String
BRAND
The consumer-visible brand with which the product/hardware will be associated, if any.
public static
final String
CPU_ABI
This field was deprecated in API level 21. Use SUPPORTED_ABIS instead.
public static
final String
CPU_ABI2
This field was deprecated in API level 21. Use SUPPORTED_ABIS instead.
public static
final String
DEVICE
https://developer.android.com/reference/android/os/Build
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The name of the industrial design.
public static
final String
DISPLAY
A build ID string meant for displaying to the user
public static
final String
FINGERPRINT
A string that uniquely identifies this build.
public static
final String
HARDWARE
The name of the hardware (from the kernel command line or /proc).
public static
final String
HOST
public static
final String
ID
Either a changelist number, or a label like "M4-rc20".
public static
final String
MANUFACTURER
The manufacturer of the product/hardware.
public static
final String
MODEL
The end-user-visible name for the end product.
public static
final String
ODM_SKU
The SKU of the device as set by the original design manufacturer (ODM).
public static
final String
PRODUCT
The name of the overall product.
public static
final String
RADIO
This field was deprecated in API level 15. The radio firmware version is frequently not
available when this class is initialized, leading to a blank or "unknown" value for this
string. Use getRadioVersion() instead.
https://developer.android.com/reference/android/os/Build
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public static
final String
SERIAL
This field was deprecated in API level 26. Use getSerial() instead.
public static
final String
SKU
The SKU of the hardware (from the kernel command line).
public static
final String
SOC_MANUFACTURER
The manufacturer of the device's primary system-on-chip.
public static
final String
SOC_MODEL
The model name of the device's primary system-on-chip.
public static
final String
STRONGBOX_MANUFACTURER
The manufacturer of the device's StrongBox chip.
public static
final String
STRONGBOX_MODEL
The model of the device's StrongBox chip.
public static
final String[]
SUPPORTED_32_BIT_ABIS
An ordered list of 32 bit ABIs supported by this device.
public static
final String[]
SUPPORTED_64_BIT_ABIS
An ordered list of 64 bit ABIs supported by this device.
public static
final String[]
SUPPORTED_ABIS
An ordered list of ABIs supported by this device.
public static
final String
TAGS
Comma-separated tags describing the build, like "unsigned,debug".
public static
final long
TIME
The time at which the build was produced, given in milliseconds since the UNIX epoch.
https://developer.android.com/reference/android/os/Build
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public static
final String
TYPE
The type of build, like "user" or "eng".
public static
final String
USER
Public constructors
Build()
Inherited methods
From class java.lang.Object
Object
clone()
Creates and returns a copy of this object.
boolean
equals(Object obj)
Indicates whether some other object is "equal to" this one.
void
finalize()
Called by the garbage collector on an object when garbage collection determines that
there are no more references to the object.
final
Class<?>
getClass()
Returns the runtime class of this Object .
int
hashCode()
Returns a hash code value for the object.
final void
notify()
Wakes up a single thread that is waiting on this object's monitor.
https://developer.android.com/reference/android/os/Build
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final void
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
String
toString()
Returns a string representation of the object.
final void
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically by being notified or
interrupted, or until a certain amount of real time has elapsed.
final void
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically by being notified or
interrupted, or until a certain amount of real time has elapsed.
final void
wait()
Causes the current thread to wait until it is awakened, typically by being notified or
interrupted.
Constants
BACKPORTED_FIX_STATUS_FIXED
public static final int BACKPORTED_FIX_STATUS_FIXED
The known issue is fixed on this device.
Constant Value: 1 (0x00000001)
BACKPORTED_FIX_STATUS_NOT_APPLICABLE
public static final int BACKPORTED_FIX_STATUS_NOT_APPLICABLE
The known issue is not applicable to this device.
For example if the issue only affects a specific brand, devices from other brands would report not applicable.
Constant Value: 2 (0x00000002)
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BACKPORTED_FIX_STATUS_NOT_FIXED
public static final int BACKPORTED_FIX_STATUS_NOT_FIXED
The known issue is not fixed on this device.
Constant Value: 3 (0x00000003)
BACKPORTED_FIX_STATUS_UNKNOWN
public static final int BACKPORTED_FIX_STATUS_UNKNOWN
The status of the known issue on this device is not known.
Constant Value: 0 (0x00000000)
UNKNOWN
public static final String UNKNOWN
Value used for when a build property is unknown.
Constant Value: "unknown"
Fields
BOARD
public static final String BOARD
The name of the underlying board, like "goldfish".
BOOTLOADER
public static final String BOOTLOADER
The system bootloader version number.
BRAND
public static final String BRAND
The consumer-visible brand with which the product/hardware will be associated, if any.
https://developer.android.com/reference/android/os/Build
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CPU_ABI
public static final String CPU_ABI
This field was deprecated in API level 21.
Use SUPPORTED_ABIS instead.
The name of the instruction set (CPU type + ABI convention) of native code.
CPU_ABI2
public static final String CPU_ABI2
This field was deprecated in API level 21.
Use SUPPORTED_ABIS instead.
The name of the second instruction set (CPU type + ABI convention) of native code.
DEVICE
public static final String DEVICE
The name of the industrial design.
DISPLAY
public static final String DISPLAY
A build ID string meant for displaying to the user
FINGERPRINT
public static final String FINGERPRINT
A string that uniquely identifies this build. Do not attempt to parse this value.
HARDWARE
public static final String HARDWARE
The name of the hardware (from the kernel command line or /proc).
https://developer.android.com/reference/android/os/Build
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HOST
public static final String HOST
ID
public static final String ID
Either a changelist number, or a label like "M4-rc20".
MANUFACTURER
public static final String MANUFACTURER
The manufacturer of the product/hardware.
MODEL
public static final String MODEL
The end-user-visible name for the end product.
ODM_SKU
public static final String ODM_SKU
The SKU of the device as set by the original design manufacturer (ODM).
This is a runtime-initialized property set during startup to configure device services. If no value is set, this is
reported as UNKNOWN .
The ODM SKU may have multiple variants for the same system SKU in case a manufacturer produces variants of
the same design. For example, the same build may be released with variations in physical keyboard and/or display
hardware, each with a different ODM SKU.
PRODUCT
public static final String PRODUCT
The name of the overall product.
RADIO
https://developer.android.com/reference/android/os/Build
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public static final String RADIO
This field was deprecated in API level 15.
The radio firmware version is frequently not available when this class is initialized, leading to a blank or
"unknown" value for this string. Use getRadioVersion() instead.
The radio firmware version number.
SERIAL
public static final String SERIAL
This field was deprecated in API level 26.
Use getSerial() instead.
A hardware serial number, if available. Alphanumeric only, case-insensitive. This field is always set to
Build.UNKNOWN .
SKU
public static final String SKU
The SKU of the hardware (from the kernel command line).
The SKU is reported by the bootloader to configure system software features. If no value is supplied by the
bootloader, this is reported as UNKNOWN .
SOC_MANUFACTURER
public static final String SOC_MANUFACTURER
The manufacturer of the device's primary system-on-chip.
SOC_MODEL
public static final String SOC_MODEL
The model name of the device's primary system-on-chip.
STRONGBOX_MANUFACTURER
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public static final String STRONGBOX_MANUFACTURER
The manufacturer of the device's StrongBox chip. If the device does not use StrongBox, this should be set to
"unsupported".
STRONGBOX_MODEL
public static final String STRONGBOX_MODEL
The model of the device's StrongBox chip. If the device does not use StrongBox, this should be set to
"unsupported".
SUPPORTED_32_BIT_ABIS
public static final String[] SUPPORTED_32_BIT_ABIS
An ordered list of 32 bit ABIs supported by this device. The most preferred ABI is the first element in the list. See
SUPPORTED_ABIS and SUPPORTED_64_BIT_ABIS .
SUPPORTED_64_BIT_ABIS
public static final String[] SUPPORTED_64_BIT_ABIS
An ordered list of 64 bit ABIs supported by this device. The most preferred ABI is the first element in the list. See
SUPPORTED_ABIS and SUPPORTED_32_BIT_ABIS .
TAGS
public static final String TAGS
Comma-separated tags describing the build, like "unsigned,debug".
TIME
public static final long TIME
The time at which the build was produced, given in milliseconds since the UNIX epoch.
TYPE
https://developer.android.com/reference/android/os/Build
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public static final String TYPE
The type of build, like "user" or "eng".
USER
public static final String USER
Public constructors
Public methods
getBackportedFixStatus
public static int getBackportedFixStatus (long id)
The status of the backported fix for a known issue on this device.
Parameters
id long : The id of the known issue to check.
getFingerprintedPartitions
public static List<Build.Partition> getFingerprintedPartitions ()
Get build information about partitions that have a separate fingerprint defined. The list includes partitions that are
suitable candidates for over-the-air updates. This is not an exhaustive list of partitions on the device.
getMajorSdkVersion
public static int getMajorSdkVersion (int sdkIntFull)
Obtain the major version encoded in a VERSION_CODES_FULL value. This value is guaranteed to be non-negative.
Parameters
sdkIntFull int
Returns
https://developer.android.com/reference/android/os/Build
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int The major version encoded in a VERSION_CODES_FULL value
getMinorSdkVersion
public static int getMinorSdkVersion (int sdkIntFull)
Obtain the minor version encoded in a VERSION_CODES_FULL value. This value is guaranteed to be non-negative.
Parameters
sdkIntFull int
Returns
int The minor version encoded in a VERSION_CODES_FULL value
getRadioVersion
public static String getRadioVersion ()
Returns the version string for the radio firmware. May return null (if, for instance, the radio is not currently on).
getSerial
public static String getSerial ()
Gets the hardware serial number, if available.
Note: Root access may allow you to modify device identifiers, such as the hardware serial number. If you change
these identifiers, you can not use key attestation to obtain proof of the device's original identifiers. KeyMint will
reject an ID attestation request if the identifiers provided by the frameworks do not match the identifiers it was
provisioned with.
Starting with API level 29, persistent device identifiers are guarded behind additional restrictions, and apps are
recommended to use resettable identifiers (see Best practices for unique identifiers). This method can be invoked
if one of the following requirements is met:
If the calling app has been granted the READ_PRIVILEGED_PHONE_STATE permission; this is a
privileged permission that can only be granted to apps preloaded on the device.
If the calling app has carrier privileges (see TelephonyManager.hasCarrierPrivileges() ) on any active
subscription.
If the calling app is the default SMS role holder (see
android.app.role.RoleManager.isRoleHeld(String) ).
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If the calling app is the device owner of a fully-managed device, a profile owner of an organization-owned
device, or their delegates (see DevicePolicyManager.getEnrollmentSpecificId() ).
If the calling app does not meet one of these requirements then this method will behave as follows:
If the calling app's target SDK is API level 28 or lower and the app has the READ_PHONE_STATE
permission then Build.UNKNOWN is returned.
If the calling app's target SDK is API level 28 or lower and the app does not have the
READ_PHONE_STATE permission, or if the calling app is targeting API level 29 or higher, then a
SecurityException is thrown.
.
Requires android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE
Returns
String The serial number if specified.
Source: https://developer.android.com/reference/android/os/Build
https://developer.android.com/reference/android/os/Build
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