Google's latest Android 7.0 Nougat update has been released for several latest flagship phones and the remaining ones are expected to get the update soon. However, Samsung released before 2015 may not be updated with the latest OS.
Android 7.0 Nougat is the seventh major mobile OS update released by Google. The last google, that is version 6.0, released by Google was Marshmallow. Several Samsung smartphone did receive the last update, however, not all devices were covered.
According to Nashville Chatter, Samsung is currently busy testing Android Nougat 7.0 on its 2016 flasgships, which includes Samsung Galaxy S7 and S7 Edge. However, the official Android 7.0 Nougat release date for 2016 flagship phones has not been announced yet as a stable version of the OS is not yet available.
On the other hand, a list of Samsung smartphones has been released, confirming the Android 7.0 Nougat will be released for certain flagships, including Galaxy S6 and S6 Edge. However, the confirmation is just limited to 2015 and 2016 flagship phones.
Unfortunately, Samsung smartphone users who still use 2014 flagships will never get a chance to use the latest OS. That means, Note Edge, Galaxy S5 and Note 4 users will not get Android 7.0 Nougat update on their phone.
The list also includes Samsung Galaxy A7 and Galaxy A8, but Galaxy C5 and C7 are missing. However, it is speculated that these to devices may make the cut by next year, including the recently-launched smartphone Samsung Galaxy C9 Pro.
While a number of Google Nexus and LG handsets have already received Android 7.0 Nougat update, there is not even a single Samsung smartphone running on the new OS. However, the update is expected to be released for Sansung's 2015 and 2016 soon.
None of this information has been confirmed by Samsung itself. That means Samsung smartphone users still have time to switch their phones based on the list, only if they want to use a Android 7.0 Nougat based device.