A standard Call of Duty 3 DVD holds about 4.3 GB of data. A "highly compressed" version uses advanced archiving tools to shrink that size significantly, sometimes down to 1 GB or less for the download. How Compression Works
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Playing Call of Duty 3 on a phone is possible, but only with high-end Snapdragon 865+ chips. A standard Call of Duty 3 DVD holds about 4