Numerous web sources offer to download APK files, but be sure to select a trusted website. Some APK files may contain suspicious software, which could be dangerous for the phone's security. Always try to avoid downloading and installing any app outside the Google Play Store on your device.
But before downloading and installing an APK from any site, read some user's reviews and comments. APKMirror monitors the files that you will not install any malware other than APK files, but not all sites give such a feature. Security of your device and data is a priority of these sites so that you can download APK files without worry about viruses and malware files. Before installing an app using an APK file other than Google Play Store, we have to ensure that our Android phone settings are enabled to install third-party apps.
It can be checked under the "Security" tab or the Setting menu. Generally, this option says install from unknown sources or allows third-party installations. However, the newer Android versions of phones are a little more different. Go to Biometrics and security and tap on the Install unknown apps. After the configuration of third-party app installation on an Android device, you also need to install a "File Manager" app. It makes it easy to locate your APK file on your smartphone so that you can run it to install.
Download one of them which you prefer more, and this app locates the APK file once it is transferred to your phone. One of the easiest ways to install an APK file on an Android device by downloading the installer files using your Android browser. Save this file on your phone.
You may see a warning message displaying " This type of file can harm your device ," accept it. If your device browser doesn't allow opening a file just after downloading, open the file manager you installed and go to the Downloads folder.
Tap on the APK file you downloaded to install. Allow the required app permissions to install if asks. You will see a confirmation when the app is installed successfully, and your app is visible in your list of installed apps. Newer versions of Android devices do set up activity slightly differently. OpenGL ES. Neural Networks. Audio Accessories. USB Headset. Custom Accessories. Sensors HAL.
Context Hub Runtime Environment. Test Development Workflow. Instrumentation Tests. Native Tests. Android Test Station. Test Framework. VTS Dashboard. Lab Infrastructure. Tap Settings. Scroll down and tap Advanced. Did this summary help you? Yes No.
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Download Article Explore this Article methods. Related Articles. Article Summary. Method 1. Open the Google Messages app. It has an icon that resembles a white speech bubble inside a blue circle. Tap the icon to open Google Messages. You can find it in your Apps menu or Home screen. The general process should be pretty similar.
It's the icon with three vertical dots in the upper-right corner of your screen. If device implementations include a 3-axis accelerometer, a 3-axis gyroscope sensor, and a magnetometer sensor, they:. If device implementations include a 3-axis magnetometer, an accelerometer sensor, and a 3-axis gyroscope sensor, they:. In open sky conditions after determining the location, while stationary or moving with less than 1 meter per second squared of acceleration:. If device implementations include a 3-axis gyroscope, an accelerometer sensor and a magnetometer sensor, they:.
If device implementations include a thermometer sensor that measures a temperature other than ambient temperature, such as CPU temperature, they:. If device implementations include a set of higher quality sensors as defined in this section, and make available them to third-party apps, they:. Note that all power consumption requirements in this section do not include the power consumption of the Application Processor.
It is inclusive of the power drawn by the entire sensor chain—the sensor, any supporting circuitry, any dedicated sensor processing system, etc. Biometric sensors can be classified as Class 3 formerly Strong , Class 2 formerly Weak , or Class 1 formerly Convenience based on their spoof and imposter acceptance rates, and on the security of the biometric pipeline.
This classification determines the capabilities the biometric sensor has to interface with the platform and with third-party applications.
Sensors are classified as Class 1 by default, and need to meet additional requirements as detailed below if they wish to be classified as either Class 2 or Class 3. Both Class 2 and Class 3 biometrics get additional capabilities as detailed below.
If device implementations make a biometric sensor available to third-party applications via android.
BiometricManager , android. BiometricPrompt , and android. In order for device implementations to allow access to keystore keys to third-party applications, they:. If device implementations wish to treat a biometric sensor as Class 1 formerly Convenience , they:.
If device implementations wish to treat a biometric sensor as Class 2 formerly Weak , they:. If device implementations are already launched on an earlier Android version and cannot meet the requirement C through a system software update, they MAY be exempted from the requirement.
If device implementations wish to treat a biometric sensor as Class 3 formerly Strong , they:. While these voice calls may or may not be packet-switched, they are for the purposes of Android considered independent of any data connectivity that may be implemented using the same network.
If device implementations report the android. The AOSP implementation meets these requirements by a heads-up notification which indicates to the user that answering an incoming call will cause the other call to be dropped. If device implementations include support for If device implementations include support for Wi-Fi Aware and expose the functionality to third-party apps, then they:. If device implementations include support for Wi-Fi Location and expose the functionality to third-party apps, then they:.
If device implementations include support for Wi-Fi keepalive offload and expose the functionality to third-party apps, they:. If the Wi-Fi server certificate is not validated or the Wi-Fi server domain name is not set, device implementations:. Android includes support for Bluetooth and Bluetooth Low Energy. If device implementations include support for Bluetooth or Bluetooth Low Energy and the app manifest does not include a declaration from the developer stating that they are not deriving location from Bluetooth, then, they:.
If device implementations include NFC hardware and plan to make it available to third-party apps, they:. These standards are optional in this version but will be required in future versions.
Existing and new devices that run this version of Android are very strongly encouraged to meet these requirements now so they will be able to upgrade to the future platform releases. The required level of IPv6 support depends on the network type, as shown in the following requirements.
If device implementations support more than one network type e. Webview API , they:. If device implementations support Open Mobile API -capable secure elements and make them available to third-party apps, they:. A rear-facing camera is a camera located on the side of the device opposite the display; that is, it images scenes on the far side of the device, like a traditional camera.
A front-facing camera is a camera located on the same side of the device as the display; that is, a camera typically used to image the user, such as for video conferencing and similar applications. If device implementations are capable of being rotated by user such as automatically via an accelerometer or manually via user input :.
Android includes two API packages to access the camera, the newer android. The older API package, android. Camera , is marked as deprecated in Android 5. All features that are common between the deprecated android. Camera class and the newer android. For example, with equivalent settings, autofocus speed and accuracy must be identical, and the quality of captured images must be the same.
Device implementations:. If device implementations use a portion of the non-removable storage to satisfy the above requirements, they:. If the removable storage device port is in a long-term stable location, such as within the battery compartment or other protective cover, device implementations are:.
For the purposes of this section, an "output port" is a physical interface such as a 3. Support for audio output over radio-based protocols such as Bluetooth, WiFi, or cellular network does not qualify as including an "output port". In order to be compatible with the headsets and other audio accessories using the 3. If device implementations have a 4 conductor 3. The test requires an audio loopback dongle , used directly in a 3. Android includes support for VR Mode , a feature which handles stereoscopic rendering of notifications and disables monocular system UI components while a VR application has user focus.
The media performance class of the device implementation can be obtained from the android. Requirements for media performance class are defined for each Android version starting with R version The special value of 0 designates that the device is not of a media performance class. If device implementations return non-zero value for android.
Some minimum performance and power criteria are critical to the user experience and impact the baseline assumptions developers would have when developing an app. A smooth user interface can be provided to the end user if there are certain minimum requirements to ensure a consistent frame rate and response times for applications and games.
Device implementations, depending on the device type, MAY have measurable requirements for the user interface latency and task switching as described in section 2. Device implementations, depending on the device type, MAY have certain requirements described in section 2 for the following read and write operations:. If device implementations include features to improve device power management that are included in AOSP e.
If device implementations extend power management features that are included in AOSP and that extension applies more stringent restrictions than the Rare App Standby Bucket , refer to section 3. Conversely, at a time when a task that third-party apps implement through JobScheduler is triggered or Firebase Cloud Messaging is delivered to third-party apps, the device MUST exit the S3 state unless the user has put the device in an inactive state.
These are not comprehensive examples and AOSP implements extensive wake-up signals that trigger a wakeup from this state. A more accurate accounting and reporting of the power consumption provides the app developer both the incentives and the tools to optimize the power usage pattern of the application. Performance can fluctuate dramatically for high-performance long-running apps, either because of the other apps running in the background or the CPU throttling due to temperature limits.
Android includes programmatic interfaces so that when the device is capable, the top foreground application can request that the system optimize the allocation of the resources to address such fluctuations. If device implementations support reserving one exclusive core for the top foreground application, they:. Specifically, they MUST enforce each permission and role defined as described in the SDK documentation; no permissions and no roles may be omitted, altered, or ignored.
MAY add additional permissions, provided the new permission ID strings are not in the android. Permissions with a protection level of dangerous are runtime permissions. Such data includes but not limited to:. TelephonyManager getServiceState requires android.
The only exceptions to the Android location permission properties above are for apps not accessing Location to derive or identify user location; specifically:.
Device implementations MUST keep consistency of the Android security and permission model, even if they include runtime environments that execute applications using some other software or technology than the Dalvik Executable Format or native code.
Alternate runtimes MAY provide a single Android sandbox shared by all applications using the alternate runtime. Android includes support for multiple users and provides support for full user isolation and clone user profiles with partial isolation i. If device implementations include support for multiple users, then for all users except users specifically created for running dual instances of the same app, they:.
Device implementations MAY create a single additional user profile of type android. CLONE against the primary user and only against the primary user for the purpose of running dual instances of the same app. These dual instances share partially isolated storage, are presented to the end user in the launcher at the same time and appear in the same recents view. For example, this could be used to support the user installing two separate instances of a single app on a dual-SIM device.
Android includes support for warning users of any outgoing premium SMS message. Premium SMS messages are text messages sent to a service registered with a carrier that may incur a charge to the user.
Device implementations MUST ensure compliance with security features in both the kernel and platform as described below. Kernel integrity and self-protection features are integral to Android security. Android contains multiple defense-in-depth features that are integral to device security.
In addition, Android focuses on reducing key classes of common bugs that contribute to poor quality and security. Android stores the history of the user's choices and manages such history by UsageStatsManager. After the first one second displayed, an indicator can change visually, such as becoming smaller, and is not required to show as originally presented and understood.
The microphone indicator may be merged with an actively displayed camera indicator, provided that text, icons, or colors indicate to the user that microphone use has begun. The camera indicator may be merged with an actively displayed microphone indicator, provided that text, icons, or colors indicate to the user that the camera use has begun.
If device implementations have a mechanism, enabled out-of-box by default, that routes network data traffic through a proxy server or VPN gateway for example, preloading a VPN service with android. If device implementations implement a user affordance to toggle on the "always-on VPN" function of a 3rd-party VPN app, they:. Android, through SpeechRecognizer onDeviceSpeechRecognizer provides ability to perform speech recognition on the device, without involving the network.
Location includes information in the Android Location class such as Latitude, Longitude, Altitude , as well as identifiers that can be converted to Location. The following is a list of location types that either directly derive a user's location or can be converted to a user's location. This is not a comprehensive list, but should be used as an example on what Location can directly or indirectly be derived from:.
Android apps targeting API level 30 or above cannot see details about other installed apps by default see Package visibility in the Android SDK documentation. If device implementations include additional information e. Android, through BlobStoreManager allows apps to contribute data blobs to the System to be shared with a selected set of apps. If device implementations support shared data blobs as described in the SDK documentation , they:.
Android, through the System API MusicRecognitionManager, supports a mechanism for device implementations to request music recognition, given an audio record, and delegate the music recognition to a privileged app implementing the MusicRecognitionService API.
If device implementations include a service that implements the System API MusicRecognitionManager or any proprietary service that streams audio data as described as above, they:. All devices MUST meet the requirements of section 9. Devices which launched on an API level earlier than that of this document are exempted from the requirements of sections 9. The upstream Android Open Source project provides a preferred implementation of File Based Encryption based on the Linux kernel "fscrypt" encryption feature, and of Metadata Encryption based on the Linux kernel "dm-default-key" feature.
This feature enables users to receive notifications from installed apps after the reboot. For insider attack resistance, we also assume the attacker gains access to broadcast cryptographic signing keys. By way of example, a device implementation that implements and complies with all of the descriptions found here will be compliant with [C].
The following requirements ensure there is transparency to the status of the device integrity. If device implementations are already launched without supporting Verified Boot on an earlier version of Android and can not add support for this feature with a system software update, they MAY be exempted from the requirement.
Verified Boot is a feature that guarantees the integrity of the device software. If device implementations support the feature, they:. If device implementations are already launched without supporting C through C on an earlier version of Android and can not add support for these requirements with a system software update, they MAY be exempted from the requirements.
If device implementations are already launched without the ability to verify file content against a trusted key on an earlier Android version and can not add support for this feature with a system software update, they MAY be exempted from the requirement.
The upstream Android Open Source project provides a preferred implementation of this feature based on the Linux kernel fs-verity feature. The AOSP implementation follows a tiered authentication model where a knowledge-factory based primary authentication can be backed by either a secondary strong biometric, or by weaker tertiary modalities.
Note that the above authentication methods are referred as the recommended primary authentication methods in this document. If device implementations add or modify the recommended primary authentication methods and use a new authentication method as a secure way to lock the screen, the new authentication method:.
If device implementations add or modify the authentication methods to unlock the lock screen if based on a known secret and use a new authentication method to be treated as a secure way to lock the screen:.
If device implementations add or modify the recommended primary authentication methods to unlock the lock screen and use a new authentication method that is based on biometrics to be treated as a secure way to lock the screen, the new method:. If the biometric authentication methods do not meet the requirements for Class 3 formerly Strong as described in section 7.
If device implementations add or modify the authentication methods to unlock the lock screen and a new authentication method is based on a physical token or the location:.
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