This document discusses user experience design considerations for mobile applications. It notes that mobile devices have limited resources like CPU and memory, require power management, and prioritize reliable phone functionality. Desktop applications don't directly translate to mobile due to smaller screens, usage contexts, and interface elements. The document recommends designing for users rather than technology, and testing applications against user and context criteria. It provides Nokia resources for mobile design best practices, templates, and quality assurance testing guidelines.

1. Mobile User Experience – Intro
Andreas Jakl
Senior Technical Consultant
Forum Nokia
20 May, 2010
v2.0a

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Thinking Mobile

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Mobile Requirements
• Limited resources
– CPU: 220 MHz – 1 GHz, 64-256 MB Ram
• No hard disc
– Therefore no virtual (= “unlimited”) memory
• Power management
– Battery life, data safety in case of power loss is an issue
• Compact
– Not much room for UI and the application itself
– Reuse of common components important
• Reliability
– Phone functionality always highest priority
– “Always on”

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Mobile UIs
• Maemo = Debian Linux
– Recompile and run any Debian
application
– Qt-based UI: no code changes necessary
• But: desktop != mobile
– Screen size
– Size of individual elements
– Key modifiers for mouse clicks
– Hover effects, previews
– Usage scenarios

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Gimp: Desktop to Mobile

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Office

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KOffice Viewer with Adapted UI

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What does UX for mobile mean?
– Functionality, ease of use – emotional connection
– Design for the user, not the technology
– Consider your concept and your interactions, and check against them at
every stage of development
• Users
• Device UI context
• Service usage context

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Design Center
forum.nokia.com/designcenter

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User Experience forum.nokia.com/ux

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Which is better for Nokia devices?

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Design Gallery
http://www.forum.nokia.com/Technology_Topics/Design_and_User_Experience/Design_Gallery/

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Design and Paper Prototyping Templates
forum.nokia.com/Technology_Topics/Design_and_User_Experience/Conceptual_Design.xhtml

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Mobile Web Templates
forum.nokia.com/Technology_Topics/Web_Technologies/Browsing/Web_Templates/

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Mobile Web Templates – Layouts

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Flowella – Task Flow and Prototyping
http://www.youtube.com/watch?v=xmuJwKYjiW0

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Behaving on a Mobile Device
• Quality Assurance for publishing
– Performed for all app stores
– Includes technical and user experience tests
• Self-testing guidelines
– Symbian Signed: http://tiny.symbian.org/testcriteria
– Java Verified test criteria: http://javaverified.com/Testing

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Symbian Signed Test Criteria
• Phone usage is critical! Examples:
– No disruption to voice calls
– No disruption to text messages
– No disruption to key device applications (messaging, contacts, calendar,
web)
– Un-installation leaves (nearly) nothing behind
– Application visible in task manager as long as it is running

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Java Verified Test Criteria
• Even stronger focus on user experience
– Application must not crash or freeze
– No excessive battery consumption
– App must start in < 25 s
– Graphics and animation must be readable and clear
– UI must be consistent throughout the app
– Browsing through app must be clear and without unnecessary steps
– App must be free of spelling errors
– Main menu contains exit, help and about
– App must handle unexpected user behavior (e.g., erroneous actions)

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Post-Sale Feedback Channels
• Note what your users say about your app!
– Read comments
– Update frequently and fast
– Word of mouth very strong factor!
Users are helping users.
But: better improve UI to target cause!

21. Thank You.
Want to learn more?
www.forum.nokia.com/ux