Depending on which mobile device you are using, the Mobile Operating System could be located in different places:

• iPhones/iPads: Tap on “Settings” => General => About.
  The Software Version is the second line from the top.
  
• Android: Tap on Home => Menu => Settings => About Phone => Software.
  The Mobile Operating System version will be listed as either Android Version or Firmware Version.

If you can’t find your operating system, you can contact us to add your Mobile Device for you. Please include a link with its technical specification. Find your Mobile Device Model here:  https://www.gsmarena.com or https://www.devicespecifications.com