And the industry has seen an increase in demand for features other than voice.
Product-development costs will be higher for the Marys, given their demand for features.
Demand for features that allow people to surf the Web and use video- and music-based services are also on the rise, it said.
"The whole market changed and suddenly the demand for feature phones vanished," Mr. Vestberg said.
"In markets such as China and Latin America, demand for feature phones fell significantly as users rushed to replace their old models with smartphones".
Gartner's data suggests weakening demand for feature phones - lower-end devices with limited functionality - led to the drop.
He points out that in China — currently the world's largest mobile market — smartphones were the biggest driver of sales, with demand for feature devices "weak".
One way of dealing with the high demand for feature extraction tools from multi-dimensional images is to introduce showcases comprising typical features re-occurring in various scientific fields.
Richard Granger, the chief executive of CfH, complains: "I get accused of both driving contractors into the ground and hosing them with money".Costs have risen because CfH is doing more things: a system for transmitting scans and X-rays from one part of the country to another was added, for example, and there are constant demands for more features and functions.
In the mature markets of western Europe, operators face fierce competition and consumer demand for more features, minutes and texts, for less money.
There are no reliable estimates for how many people in the United States keep kosher, Dr. Pollak said, but there is sufficient demand for these features to make it worthwhile for the manufacturers.
