As to why the Galaxy S4 no longer received the Marshmallow update, smartphone manufacturers have set a two-year time frame for its devices to take on mobile operating system updates. While there is no rule that set everything in stone about this, the reason why the device makers have set an allowable period to update the OS of their devices is to ensure that the smartphones can still perform reasonably well.
As everyone knows, every OS update usually gets bigger and bigger, as far as file sizes are concerned and an older smartphone can only take so much before it practically pukes and can no longer handle it.
That seems to be the case with the very popular Samsung Galaxy S4, the flagship smartphone of the Korean tech giant in 2013.
As the smartphone is already close to three years old, Samsung has confirmed in November last year, just weeks after Google officially rolled out the Android 6.0 Marshmallow updates, that the Galaxy S4 and that Galaxy Note 3 will not be receiving the new OS anymore.
Apparently, Samsung has a good basis for no longer allowing Android 6.0 Marshmallow updates to the Galaxy S4.
It turns out that the device has been suffering from sub-par performance when it took in the official Android 5.0 Lollipop updates early last year that taking on further upgrade would have a telling impact on the performance, functionality and usability of the device.