This report is based on 8 series of usability studies with users in 4 countries (mostly the US, but also Australia, Hong Kong, and the UK), reporting how they actually used a broad variety of websites and apps on a range of mobile devices, including touch phones and smartphones from many vendors. The report also presents the findings from two diary studies of users in 6 countries (Australia, The Netherlands, Romania, Singapore, UK, and US) that let us follow user behavior over a longer time period than is feasible in traditional user testing.
The basic finding from this research is that mobile users face severe usability problems in attempting to get things done on today's websites, whether dedicated mobile sites or traditional desktop-optimized sites that are rendered through a mobile browser.
From our empirical observation of real user behavior we derived a set of design guidelines for improving the usability of Web-based content and services when they are used on a mobile device, whether on websites or through native apps.
This 293-page report presents 237 design guidelines based on our usability research. Discussions and 479 screenshot illustrations supplement our findings.
The second edition contains 152 more guidelines and includes new research on Android and Windows devices.
USA Today about the first edition
The information in this report is based on usability research with mobile users aged 20-50+ years. We used two different research methods:
Representative users tested a variety of websites and apps on a range of mobile devices, including touch phones and smartphones from many vendors. The studies took place in the United States, Australia, China (Hong Kong), the United Kingdom, the Netherlands, Romania, and Singapore.
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