What Takes Up the Most Storage Space? What Takes Up the Most Storage Space? To answer this question with an example, let's start with the example of a phone with 16 GB memory. Approximately 6-7 GB of space is occupied only by applications. Games 700-900 MB. Music takes up 600-700 MB of space. WhatsApp takes up approximately 400 to 500 MB of space. Facebook has about 300-400 […]