When it comes to screen sizes, Apple's lead at the top of the smartphone market is under challenge as other suppliers catch up and exceed that of the iPhone.

But has that natural limit to handset screen size already been reached by the market, dictated by convenience, ergonomics and portability?

You can read Stuart Robinson's* opinion on the above question together with comprehensive data of smartphone screen sizes by clicking on the title of his 9-page report: 'Size Matters: HTC and NEC Knock Apple Off Top Spot as Display Sizes Grow 8 percent year-on-year in Q1 2011'

This highly focused report with detailed conclusions and implications is supported by heavily-researched data from the smartphone portfolios of 130 network operators in 30 countries. That comprehensive data was supplied by Strategy Analytics' SpecTRAX mobile phone market analysis tool.

If you would like to investigate SpecTRAX further just click HERE

*Stuart Robinson is Director of Strategy Analytics' Handset Technology Component Service including SpecTRAX.

Example charts from this report:

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Steve Entwistle