code: private function enablePlatform(string $platform)
      {
          foreach ($this->sns->getPaginator('ListEndpointsByPlatformApplication', [
              'PlatformApplicationArn' => $this->arns[$platform],
          ]) as $endpointsResult) {
              foreach ($endpointsResult['Endpoints'] as $endpoint) {
                  if ($endpoint['Attributes']['Enabled'] == 'false') {
                      try {
                          $this->sns->setEndpointAttributes(
                              [
                                  'EndpointArn' => $endpoint['EndpointArn'],
                                  'Attributes' => [
                                      'Enabled' => 'true',
                                  ],
                              ]
                          );
                          $this->logger && $this->logger->info("Enabled {$endpoint['EndpointArn']}");
                      } catch (\Exception $e) {
                          $this->logger && $this->logger->error(
                              "Failed to push set attributes on {$endpoint['EndpointArn']}",
                              [
                                  'exception' => $e,
                                  'endpoint' => $endpoint,
                              ]
                          );
                      }
                  }
              }
          }
      }
docs: Enable all devices registered on platform.