Here’s the executive summary of usability test findings conducted on 3 next-generation smartphones: the Nokia N95, the HTC touch, and the Apple iPhone.
Users with no smartphone experience conducted a series of 8 tasks on each device in order to determine how the devices fared in terms of overall usability. The study also assessed user perceptions of the devices in terms of ease of use, quality, pleasure-to-use, complexity of function-set, appropriateness for business use, and personal purchase preference.
• Participants completed more tasks successfully using the iPhone than they did using either the HTC Touch or the Nokia N95.
• Participants successfully completed tasks twice as fast (on average) on the iPhone as they did on the HTC Touch or Nokia N95.
• Participants were more interested in purchasing the iPhone for themselves, although the HTC Touch and iPhone were both selected as being appropriate for business users. Users perceived the iPhone to be more complex than the Nokia N95 in terms of the number of features and functions offered.
• In addition to user testing, our cognitive psychologists conducted a heuristic review based on a qualitative scoring of each device along five dimensions (global navigation, usability/information architecture, ergonomics, look-and-feel, and breadth of functionality). The iPhone scored higher on the expert review than both the HTC Touch and Nokia N95.
Feature comparison Apple iPhone vs Nokia N95