code: public static String getSysInfo() {
          String info = sysInfo.get();
  
          if (info == null) {
              final String version = Build.VERSION.RELEASE; // "1.0" or "3.4b5"
              final String model = Build.MODEL;
  
              info = String.format(
                  Locale.ENGLISH,
                  SYS_INFO,
                  (version.length() <= 0) ? "0.0" : version,
                  (model.length() <= 0) ? "unknown" : model);
  
              sysInfo.compareAndSet(null, info);
          }
  
          return info;
      }
docs: This is information about the Android on which we are running.