For starters, Android is a operating system software for mobile phones. Lot of popular mobile phone manufactures have launched Android powered phones. A new Android version is available after sometime with improvements and bug fixes. If you intend to update to latest version of Android software, you need to first know the current version of Android software on your mobile phone.
View Android software version on mobile phone
1. On the Home screen, press Menu button (Press Home button to open Home screen, if you are on different screen).
2. Tap on Settingsand then goto About Phone option.
3. Then tap of Software Information or Firmware Version option (whichever is available on your Android phone).
4. You can view Android versionon Software Information or Firmware Version screen. It also display other releated information about Android software on your mobile phone including: baseband version, kernel version, build number, software number, browser version.