Which version of the Androidâ„¢ platform does my Samsung Galaxy S II use?

This mobile device is operating on OS Android 4.1.2 Jelly Bean (I777UCMD9).

Update History
I777UCMD9 09/15/2015
  • Android OS Security Enhancements (Stagefright)



  • Android 4.1.2 Jelly Bean Update.
  • Improved multi-tasking
  • Customizable widgets
  • Improved text input and spell-checking
  • New dictionaries for better error correction and word suggestion
  • Enhanced web browsing and personalization capability
  • Improved email management
  • New technology for better security options
  • Clearer menu formatting
  • Google Now with enhanced voice activation
  • Adds Browser bar, Drive Mode, ATT Locker, Mobile Hot Spot, Featured Apps widget as preloaded applications
  • Removes Qik and Mspot applications
  • TTY call quality improvement.



  • Security Enhancements
  • Display Improvements
  • Movies App removed


  • Upgraded Android OS version from 4.0.3 to 4.0.4.
  • Improved EAS/Office 365 compatibility.
  • Updated Google GMS version update 4.0_r2 to 4.0_r7.


  •  Android 4.0.3 Ice Cream Sandwich Update.


  • Commercial Mobile Alert System (CMAS) enabled.

The Commercial Mobile Alert System (CMAS) is a partnership between FEMA, the FCC, and wireless carriers, whose purpose is to enhance public safety. CMAS enables alerting authorities to use FEMA's IPAWS OPEN platform to send text-like alerts to the public via their wireless handsets, based on a mobile device's geographic location. CMAS will relay Presidential, AMBER, and Imminent Threat alerts to mobile phones using new technology that will not be backlogged during times of emergency when networks are highly congested.

  • Android OS upgrade to Gingerbread 2.3.6
  • Android Security update applied.
  • Screen Lock issue fixed
  • AP Mobile Widget updated to to address background data usage.
  • Updates applied to improve Call Quality



  • Initial Release


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