Added in API level 1

Summary: Nested Classes | Constants | Fields | Ctors | Methods | Inherited Methods

Build

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Kotlin |Java

public class Build
extends Object

java.lang.Object
↳	android.os.Build

---

Information about the current build, extracted from system properties.

Summary

Nested classes
class	Build.Partition Build information for a particular device partition.
class	Build.VERSION Various version strings.
class	Build.VERSION_CODES Enumeration of the currently known SDK version codes.

Constants
String	UNKNOWN Value used for when a build property is unknown.

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 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.
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[]	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.
public static final String	TYPE The type of build, like "user" or "eng".
public static final String	USER

Public constructors
Build()

Public methods
static List<Build.Partition>	getFingerprintedPartitions() Get build information about partitions that have a separate fingerprint defined.
static String	getRadioVersion() Returns the version string for the radio firmware.
static String	getSerial() Gets the hardware serial number, if available.

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. 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

UNKNOWN

Added in API level 8

public static final String UNKNOWN

Value used for when a build property is unknown.

Constant Value: "unknown"

Fields

BOARD

Added in API level 1

public static final String BOARD

The name of the underlying board, like "goldfish".

BOOTLOADER

Added in API level 8

public static final String BOOTLOADER

The system bootloader version number.

BRAND

Added in API level 1

public static final String BRAND

The consumer-visible brand with which the product/hardware will be associated, if any.

CPU_ABI

Added in API level 4
Deprecated in API level 21

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

Added in API level 8
Deprecated in API level 21

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

Added in API level 1

public static final String DEVICE

The name of the industrial design.

DISPLAY

Added in API level 3

public static final String DISPLAY

A build ID string meant for displaying to the user

FINGERPRINT

Added in API level 1

public static final String FINGERPRINT

A string that uniquely identifies this build. Do not attempt to parse this value.

HARDWARE

Added in API level 8

public static final String HARDWARE

The name of the hardware (from the kernel command line or /proc).

HOST

Added in API level 1

public static final String HOST

ID

Added in API level 1

public static final String ID

Either a changelist number, or a label like "M4-rc20".

MANUFACTURER

Added in API level 4

public static final String MANUFACTURER

The manufacturer of the product/hardware.

MODEL

Added in API level 1

public static final String MODEL

The end-user-visible name for the end product.

ODM_SKU

Added in API level 31

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

Added in API level 1

public static final String PRODUCT

The name of the overall product.

RADIO

Added in API level 8
Deprecated in API level 15

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

Added in API level 9
Deprecated in API level 26

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

Added in API level 31

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

Added in API level 31

public static final String SOC_MANUFACTURER

The manufacturer of the device's primary system-on-chip.

SOC_MODEL

Added in API level 31

public static final String SOC_MODEL

The model name of the device's primary system-on-chip.

SUPPORTED_32_BIT_ABIS

Added in API level 21

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

Added in API level 21

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.

SUPPORTED_ABIS

Added in API level 21

public static final String[] SUPPORTED_ABIS

An ordered list of ABIs supported by this device. The most preferred ABI is the first element in the list. See SUPPORTED_32_BIT_ABIS and SUPPORTED_64_BIT_ABIS.

TAGS

Added in API level 1

public static final String TAGS

Comma-separated tags describing the build, like "unsigned,debug".

TIME

Added in API level 1

public static final long TIME

The time at which the build was produced, given in milliseconds since the UNIX epoch.

TYPE

Added in API level 1

public static final String TYPE

The type of build, like "user" or "eng".

USER

Added in API level 1

public static final String USER

Public constructors

Build

public Build ()

Public methods

getFingerprintedPartitions

Added in API level 29

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.

Returns
List<Build.Partition>	This value cannot be null.

getRadioVersion

Added in API level 14

public static String getRadioVersion ()

Returns the version string for the radio firmware. May return null (if, for instance, the radio is not currently on).

Returns
String

getSerial

Added in API level 26

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 RoleManager.isRoleHeld(String)).
• 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.