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Usability testing is a common tool used for evaluating the usability of a device in a development process. This method helps to improve the features and process of product. A well conducted usability testing process ensures that there are lesser technical problem at the user level, which would result in less maintenance efforts, development cost and ensuring customer satisfaction Today the mobile phone has become one of the most common personal digital devices. This essay describes about usability testing of mobile phones along with its application.
Usability of mobile phones Thomas Klockar, David A.Carr, Anna Hedman, Tomas Johansson, Fredrik Bengtsson Department of computer science and electrical engineering Lulea university of technology - SE971 87 Lulea,Sweden
The experiment was performed on analysis of functions with cellular phones. From the analysis a list of twenty- six tasks were constructed for the experiment. The tasks include frequently used functions and infrequently used functions. The functions and keys various, and some functions may not be available on all phones. Frequently used task such as making a call from phone book and list of available operators will be infrequent task. For every task a keystroke- level is constructed on test phones.
The model constructed was limited to the shortest path through the phone interface. The comparison of the length of the paths indicates the learning difficulty for an interface. The experiment shows for a frequent task, phones provides an interface to be executed with in 10 keystrokes or less. The testing was carried out on Nokia, Ericsson, Siemens phones. The experiment shows Nokia and Ericsson interfaces are more similar to that of Siemens phone.
The result shows Nokia phones are easiest to use and Siemens phones are most difficult to use.
Evaluating the Siemens C10 Mobile Phone: Going beyond "quick and dirty" Usability Testing Martin Böcker and Anne Suwita Siemens ICP CD TI 3, Hofmannstr. 51, 81359 Munich, F.R. Germany
This paper describes the evaluation conducted at Siemens for an interface of a mobile phone.
The experiment was conducted by comparing Siemens mobile phone interface with an identical interface without icons. The experiment suggests the users to read the manual before experimenting or verifying manual during the tasks.
The large number of analysis is based on difference between the two designs of mobile phones and nationality of the testing subjects which may influence their performance. For solving these tasks many steps were necessary. However the experiment mainly focused on display and keys of mobile phones along with usability acceptance. The experiment is carried out in two versions. First version led to collecting the observations data and second led to subject's questioner and comments and finally subjects were interviewed about particular problems and suggestions for improvement.
The final results focused on improvements in design and need of integrating usability evaluation.
Usability Testing of Mobile Applications: A Comparison between Laboratory and Field Testing Anne Kaikkonen ,Nokia Group- Finland, Aki Kekäläinen Mihael Cankar, TeliaSonera- Finland Anu Kankainen Idean Research- Finland
This journal clarifies Usability testing for a mobile application in the laboratory is more sufficient rather than Studying user interface along with navigation issues. The journal shows usability of a mobile application was tested in two environments mainly in a laboratory and other in a field. The results shows same problems were found in both environments but differences occurred only in the frequency of findings between the contexts.
Usability tests are traditionally conducted in usability test laboratories, the journals also says that laboratory environment type of testing is a peaceful space, where a test user can concentrate more on the given tasks. The study also clarifies the most of mobile device evaluations were done in laboratory settings this may be due to data collection techniques.
Results indicate that conducting a time-consuming field test may not be worthwhile when searching user interface flaws to improve user interaction.
Browsing on Mobile Phones, Virpi Roto ,Nokia Research Center,Nokia Group, Finland
This journal describes about browsing on mobile phones. Although mobile browsing is not popular everywhere, this paper stats that browsing on mobile phone will be popular near in future the most important thing is to provide a compact device, which can be used to connect the internet using mobile options. The mobile browsing usability consists of several layers, but user cannot identify layer which cause usability problem.
This paper clarifies designing mobile browser for a small screen with input mechanisms is a challenging task because most devices are used in various countries. it also suggest that mobile browser should function smoothly with all types of content.tha main issues raised by the author is that both content and browser developers should understand the nature of mobile context.
The final result stats that service should be flexible depending on the different factors, but it is too expensive for service providers to build this context onmobile service. It is clear that improvements and inventions are needed to make web pages viewable on small screen mobile phones.
Demarcating User experience Virpi Roto, Tampere University of Technology, Human-Centered Technology, KorkeakoulunkatuTampere, Finland Nokia Research Centre ,Nokia Group, Finland
This paper discusses the scoping of user experience faced by users. User experience is a crossing point of several disciplines. A group of distinguished panellists from academic areas and industries represented the different perspectives of user experience. The main goal of this panel is to understand the concept of user experience.
The user experience is a concept covering all aspects of experience based on users. The main issue is that the practitioners in development area had difficulties to understand the concept of user experience. The author stats that Instead of dismissing the whole term of user experience, the developers can cover a certain set of cases , so that it makes developers scope clear and easy. There have been several activities that aim to get closer to a shared understanding of the vague concept of User experience, and the panel builds on those activities. The two main workshops special interest group session and online survey had been conducted to collect the information on user experience.