While I’m no fan of Apple, the iPhone has so far been the leader in performance and storage. The internal storage of Apple’s latest and greatest iPhone provides a good benchmark for the current level of storage of the entire smartphone industry. When an iPhone with a new level of storage comes out, every manufacturer plays catch-up with Apple releases a flagship phone of similar storage.

Here is a chart that shows the trend in iPhone in internal storage. It extrapolates the trend into the future to predict when the iPhone will likely have one terabyte of internal storage (blue is historical storage levels, orange is predicted, and the dotted line is the trendline):

The chart assumes an exponential trend, since storage density and prices have followed an exponential increase and reduction trend.

I assumed that from 2018 through 2020, the iPhone will stay at 512 GB, similar to how it remained at 64 GB from 2011 through 2013. It is possible that instead of this, the iPhone will stay at 256 GB from 2017 through 2019. This will not significantly affect the historical trend.

Here is the same chart with the forecast extended to 2030. The trendline predicts an internal storage of 5 terabytes in 2027 and 10 terabytes in 2029.

I know that 10 terabytes in a smartphone may seem unnecessarily high. But historical trends show that every age can find good (and frivolous) uses for all the storage it can get.

Below is a table of every iPhone release date, device name, highest offered storage and battery capacity:

Release Date	Device	Storage (GB)	Battery (mAh)
June 29, 2007	iPhone 1	16	1400
July 11, 2008	iPhone 3G	16	1150
June 19 2009	iPhone 3GS	32	1219
June 24, 2010	iPhone 4	32	1420
October 14, 2011	iPhone 4S	64	1432
September 21, 2012	iPhone 5	64	1440
September 20, 2013	iPhone 5S	64	1560
September 19, 2014	iPhone 6	128	1810
September 25, 2015	iPhone 6S	128	1715
September 16, 2016	iPhone 7	256	1960