Click here to view the Android documentation about the difference between brand and manufacturer.
The human-friendly name of the device model. This is the name that people would typically use to refer to the device rather than a programmatic model identifier. This value of this field may be null if it cannot be determined.
Android only. The specific configuration or name of the industrial design. It represents the device's name when it was designed during manufacturing into mass production. On Android, it corresponds to Build.DEVICE. On web and iOS, this value is null.
Android only. The device's overall product name chosen by the device implementer containing the development name or code name of the device. Corresponds to Build.PRODUCT. On web and iOS, this value is null.
The device's total memory, in bytes. This is the total memory accessible to the kernel, but not necessarily to a single app. This is basically the amount of RAM the device has, not including below-kernel fixed allocations like DMA buffers, RAM for the baseband CPU, etc… On web, this value is null.
A list of supported processor architecture versions. The device expects the binaries it runs to be compiled for one of these architectures. This value is null if the supported architectures could not be determined, particularly on web.
The build ID of the OS that more precisely identifies the version of the OS. On Android, this corresponds to Build.DISPLAY (not Build.ID) and currently is a string as described here. On iOS, this corresponds to kern.osversion and is the detailed OS version sometimes displayed next to the more human-readable version. On web, this value is null.
Android only. The Android SDK version of the software currently running on this hardware device. This value never changes while a device is booted, but it may increase when the hardware manufacturer provides an OS update. See here to see all possible version codes and corresponding versions. On web and iOS, this value is null.
On Android, for devices other than TVs, the device type is determined by the screen resolution (screen diagonal size), so the result may not be completely accurate. If the screen diagonal length is between 3" and 6.9", the method returns DeviceType.PHONE. For lengths between 7" and 18", the method returns DeviceType.TABLET. Otherwise, the method returns DeviceType.UNKNOWN.
Gets the uptime since the last reboot of the device, in milliseconds.
Returns a promise that resolves to a number that represents the milliseconds since last reboot. Android devices dp not count time spent in deep sleep. On web, this throws an UnavailabilityError.
await Device.getUptimeAsync();// 4371054
Android only. Returns the maximum amount of memory that the Java VM will attempt to use. If there is no inherent limit then Number.MAX_SAFE_INTEGER is returned.
Returns a promise that resolves to the maximum available memory that the Java vm will use, in bytes. On iOS and web, this throws an UnavailabilityError.
await Device.getMaxMemoryAsync();// 402653184
WARNING: This method is experimental and is not completely reliable. See description below.
Checks whether the device has been rooted (Android) or jailbroken (iOS). This is not completely reliable because there exist solutions to bypass root-detection on both iOS and Android. Further, many root-detection checks can be bypassed via reverse engineering.
On Android, it's implemented in a way to find all possible files paths that contain the "su" executable but some devices that are not rooted may also have this executable. Therefore, there's no guarantee that this method will always return correctly.
On iOS, these jailbreak checks are used to detect if a device is rooted/jailbroken. However, since there are closed-sourced solutions such as xCon that aim to hook every known method and function responsible for informing an application of a jailbroken device, this method may not reliably detect devices that have xCon or similar packages installed.
On web, this always resolves to false even if the device is rooted.
Returns a promise that resolves to a boolean that specifies whether this device is rooted.
await Device.isRootedExperimentalAsync();// true or false
Android only. Returns whether applications can be installed for this user via the system's Intent#ACTION_INSTALL_PACKAGE mechanism rather than through the OS's default app store, like Google Play.
Returns a promise that resolves to a boolean that represents whether the calling package is allowed to request package installation. On iOS and web, this throws an UnavailabilityError.
await Device.isSideLoadingEnabled();// true or false
Android only. Gets a list of features that are available on the system. The feature names are platform-specific. See here to view Android official docs about this implementation.
Returns a promise that resolves to an array of strings, each of which is a platform-specific name of a feature available on the current device. On iOS and web, this always resolves to an empty array.
Android only. Tells if the device has a specific system feature.
feature (string) -- The platform-specific name of the feature to check for on the device. You can get all available system features with Device.getSystemFeatureAsync(). See here to view acceptable feature strings.
Returns a promise that resolves to a boolean value indicating whether the device has the specified system feature. On iOS and web, this always resolves to false.
await Device.hasPlatformFeatureAsync('amazon.hardware.fire_tv');// true or false
An enum of the different types of devices supported by Expo, with these values:
UNKNOWN -- An unrecognized device type
PHONE -- Mobile phone handsets, typically with a touch screen and held in one hand
TABLET -- Tablet computers, typically with a touch screen that is larger than a phone's
DESKTOP -- Desktop or laptop computers, typically with a keyboard and mouse
TV -- TV-based interfaces
Error code thrown for isRootedExperimentalAsync. This may be thrown if there's no read access to certain system files.