How to install the spanish language pack in a galaxy s7?
From Settings, go to: Language and input. Under 'Keyboard and input preferences', tap Samsung keyboard. Tap 'Add input languages'. Allow the language list to update, this may take a few seconds. You'll see a message when the language list update is complete. Scroll down and select either Español ES or US. You'll need to be connected to Wi-Fi (preferred) or mobile data in order to download additional languages.