How can i update my operating system on Samsung galaxy s3?

[AC Question]

There are certain settings that are not on my galaxy s3 due to the old version of operating system.

 

[Josiah23]

Have you tried settings - about device -system update? If so and got nothing you could always flash one yourself. Try http://wccftech.com/update-galaxy-s3-i9300-to-android-5-0/ or xda

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