Samsung Galaxy S3 has now got the CaynogenMod CM13 Custom ROM to update the device to Android Marshmallow. This custom ROM has all the features of the original Android Marshmallow update. Samsung has not released its Android 6.0 Marshmallow update plans, for the device, so you can expect some delay on Marshmallow update or it may not be available at all.Sprint Samsung Galaxy S3

If you are anxious of updating your AT&T leased Samsung Galaxy