Android How to programmatically access the device serial number shown in the AVD manager API Version 8

Question

How do I programmatically access the value shown in the image below

User · Answer

Up to Android 7 1  SDK 25   Until Android 7 1 you will get it with   Build SERIAL   From Android 8  SDK 26   On Android 8  SDK 26  and above  this field will return UNKNOWN and must be accessed with   Build getSerial     which requires the dangerous permission  android permission READ PHONE STATE    From Android Q  SDK 29   Since Android Q using Build getSerial   gets a bit more complicated by requiring   android Manifest permission READ PRIVILEGED PHONE STATE  which can only be acquired by system apps   or for the calling package to be the device or profile owner and have the READ PHONE STATE permission  This means most apps won t be able to uses this feature  See the Android Q announcement from Google   See Android SDK reference     Best Practice for Unique Device Identifier  If you just require a unique identifier  it s best to avoid using hardware identifiers as Google continuously tries to make it harder to access them for privacy reasons  You could just generate a UUID randomUUID   toString    and save it the first time it needs to be accessed in e g  shared preferences  Alternatively you could use ANDROID ID which is a 8 byte long hex string unique to the device  user and  only Android 8   app installation  For more info on that topic  see Best practices for unique identifiers

User · Answer

This is the hardware serial number  To access it on   Android Q      SDK 29  android Manifest permission READ PRIVILEGED PHONE STATE is required  Only system apps can require this permission  If the calling package is the device or profile owner then the READ PHONE STATE permission suffices  Android 8 and later     SDK 26  use android os Build getSerial   which requires the dangerous permission READ PHONE STATE  Using android os Build SERIAL returns android os Build UNKNOWN  Android 7 1 and earlier   lt   SDK 25  and earlier android os Build SERIAL does return a valid serial    It s unique for any device  If you are looking for possibilities on how to get use a unique device id you should read here   For a solution involving reflection without requiring a permission see this answer

User · Answer

From Android P  defining the READ PHONE STATE permission in AndroidManifest only  will not work  We have to actually request for the permission  Below code works for me   RequiresApi api   Build VERSION CODES P   Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity main        if  ActivityCompat checkSelfPermission this  Manifest permission READ PHONE STATE     PackageManager PERMISSION GRANTED            ActivityCompat requestPermissions this  new String   Manifest permission READ PHONE STATE   101             RequiresApi api   Build VERSION CODES O   Override protected void onResume         super onResume        if  ActivityCompat checkSelfPermission this  Manifest permission READ PHONE STATE     PackageManager PERMISSION GRANTED            return            Log d TAG Build getSerial        RequiresApi api   Build VERSION CODES O   Override public void onRequestPermissionsResult int requestCode  String   permissions  int   grantResults        switch  requestCode            case 101              if  grantResults 0     PackageManager PERMISSION GRANTED                if  ActivityCompat checkSelfPermission this  Manifest permission READ PHONE STATE     PackageManager PERMISSION GRANTED                    return                          else                 not granted                   break          default              super onRequestPermissionsResult requestCode  permissions  grantResults            Add this permissions in AndroidManifest xml  lt uses-permission android name    quot android permission INTERNET quot   gt   lt uses-permission android name    quot android permission READ PHONE STATE quot    gt   Hope this helps  Thank You  MJ

User · Answer

Build SERIAL can be empty or sometimes return a different value  proof 1  proof 2  than what you can see in your device s settings   If you want a more complete and robust solution  I ve compiled every possible solution I could found in a single gist  Here s a simplified version of it    public static String getSerialNumber         String serialNumber       try           Class lt   gt  c   Class forName  android os SystemProperties            Method get   c getMethod  get   String class            serialNumber    String  get invoke c   gsm sn1            if  serialNumber equals                  serialNumber    String  get invoke c   ril serialnumber            if  serialNumber equals                  serialNumber    String  get invoke c   ro serialno            if  serialNumber equals                  serialNumber    String  get invoke c   sys serialnumber            if  serialNumber equals                  serialNumber   Build SERIAL              If none of the methods above worked         if  serialNumber equals                  serialNumber   null        catch  Exception e            e printStackTrace            serialNumber   null             return serialNumber      I try to update the gist regularly whenever I can test on a new device or Android version  Contributions are welcome too

[android] Android: How to programmatically access the device serial number shown in the AVD manager (API Version 8)

Up to Android 7.1 (SDK 25)

From Android 8 (SDK 26)

From Android Q (SDK 29)

Best Practice for Unique Device Identifier

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