There have been also many updates which brought new features on the Galaxy C devices. If they receive the Nougat update now, they will also receive enhanced notification setup, including a Quick Reply feature, and expandable notifications which can be used from the notification shade. The permissions of many applications have been also optimized in the Android 7.0 Nougat. Currently, the Galaxy C devices are running an Android 6.0.1 Marshmallow, so the Nougat can really bring many new things on them.
All of the Galaxy C devices are being made out of metal, and they also feature a single rear-facing camera. There is also a front-facing fingerprint sensor scanner placed on them. Also, they all feature a Full HD Super AMOLED panels, with only difference in sizes between them. Also, there are differences in the SoC, where the smallest device is featuring a Snapdragon 617 64-bit octa-core processor. The other one has the Snapdragon 625 64-bit octa-core processor. The Galaxy C9 is the most powerful devices of the Galaxy C family, having the Snapdragon 653 64-bit octa-core processor. The Galaxy C5 and C7 are featuring 4GB of RAM, while the C9 features 6GB of RAM.