Apps targeting P need phone pemrisison to get device serial - framework

            }

            // We deprecated Build.SERIAL and it is not accessible to

            // apps that target the v2 security sandbox. Since access to

            // the serial is now behind a permission we push down the value.

            String buildSerial = appInfo.targetSandboxVersion < 2

            // apps that target the v2 security sandbox and to apps that

            // target APIs higher than O MR1. Since access to the serial

            // is now behind a permission we push down the value.

            final String buildSerial = (appInfo.targetSandboxVersion < 2

                    && appInfo.targetSdkVersion <= Build.VERSION_CODES.O_MR1)

                            ? sTheRealBuildSerial : Build.UNKNOWN;

            // Check if this is a secondary process that should be incorporated into some