* 1st gen iPhone (7/10/07 to 7/11/08; 367 days) - 981 MB (2.67 MB/day) * iPhone 3G (7/11/08 to 6/23/09; 347 days) - 1.9 GB (5.48 MB/day) * iPhone 3GS (6/23/09

* 1st gen iPhone (7/10/07 to 7/11/08; 367 days) - 981 MB (2.67 MB/day) * iPhone 3G (7/11/08 to 6/23/09; 347 days) - 1.9 GB (5.48 MB/day) * iPhone 3GS (6/23/09 to present; 343 days) - 2.8 GB (8.16 MB/day) For reference, 200 MB/month is ~6.5 MB/day and 2 GB/month is ~65 MB/day.