According to the U.S. Bureau of Labor Statistics, prices for wireless telephone services were 35.52% lower in 2017 versus 2000.
Between 2000 and 2017: Cell service experienced an average inflation rate of -2.55% per year. In other words, cell service costing $50 in the year 2000 would cost $32.24 in 2017 for an equivalent purchase. Compared to the overall inflation rate of 2.09% during this same period, cell service inflation was significantly lower.
In the year 2000: Pricing changed by -10.54%, significantly below the average yearly change for cell service during the 2000-2017 time period. Compared to overall inflation for all items in 2000 (3.38%), price inflation for cell service was much lower.
Raw Consumer Price Index data from U.S. Bureau of Labor Statistics for Wireless telephone services: