The super mobile operating system "Android" is development by Google. It is based on a modified version of Linux kernel. Being one the most used mobile OS, Android Operating system designed for touchscreen mobile devices like smartphones and tablets.
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Lets keep it shot and clear, below are the codes. Use them as you wish. This codes works based on Android versions.
secret-codes
Ensure to drop a comments for anyone you try and have discovered its not working.
You can also get it on this Pinterest Pin
Posted from my blog with SteemPress : http://247creaks.com/blog/top-android-secret-codes-for-mobile-phones/