Going Mobile: Choosing target devices & platforms

going mobile choosing target devices & platforms Barbara Ballard http://www.littlespringsdesign.com

development options Symbian Java ME BREW UIQ ARM Flash Lite Palm SVG QT Linux app native app multi data sync mojax (etc.) Windows Mobile widgets x15 iMode picture WML messaging web XHTML Basic MMS IM XHTML MP SMS “web” ECMAScript

typical thinking

“Let’s design for the RAZR”

“Our market is all phones” “Let’s design for the RAZR” “It’s gotta work on iPhone”

“Our market is all phones” “Smart phones are key” “Let’s design for the RAZR” “Java is a nightmare” “It’s gotta work on iPhone” “Java is the best answer”

needs-based thinking

a selection methodology • class of technology based on application & user needs • native, cross-device app, web, messaging • speciﬁcs of technology based on market, distribution, and internal company needs • Java, BREW, web, scripting, Symbian, etc.

mobile needs come from • users & context • distribution: on/off deck; market • device & platform capabilities • necessary application behavior • data needs • the carry principle

fashion personal specialized statement device multipurpose reﬂection device communications of personality proliferation focus the carry principle a user’s mobile phone is always carried battery small screen powered inconsistent difﬁcult text 1 handed connectivity entry operation

application & user needs

interaction needs • reliability of data access • interaction ﬂow • glanceability of data • freshness of data • interaction richness

data access reliability present present calendar unless unless contacts device device app native app multi lost lost search only when could messaging web be data access Twitter delayed roaming air travel coverage hole

interaction ﬂow action games excellent good call contact app native app multi news messaging web very slow slow add to calendar script only somewhat supported

glanceability of data • single screen paradigm makes difﬁcult • browser, app not likely running • less true for smart phones • smart phone home screens • future: widgets

freshness of data contacts takes takes effort effort app native app multi RSS stocks messaging web good excellent Twitter

interaction richness action games rich good turn by native app turn app multi device feature directions access limited Twitter stock messaging web scarce moderate RSS qoutes script only somewhat supported

business needs

target market = devices • Business users - mostly “smart phones” • North America: Windows Mobile, Blackberry • Europe: Symbian, some Windows • Asia: mix - Linux, ARM • Consumers - mostly “feature phones” • Africa: Symbian, Windows • elsewhere: mix (Symbian uncommon in US, Asia)

impact of device selection limited to wide - “smart “feature app native app multi phones” phones” text - all messaging web XHTML - wide other - wide script - narrow

smart phone? named OS? download native apps? heavy data

distribution issues • carrier (“on deck”) • only way to distribute BREW • off deck • may need carrier relationship anyhow • SMS links • disabled by Verizon • 3rd party sales (e.g., Handango)

discovery issues • environmental (e.g., billboard) • camera input/MMS • short codes • messaging apps • downloadable apps (carriers may block) • URL • .mobi unnecessary (m.gmail.com) • on deck

platform issues

web issues • limited script support app native app multi • variable standards • Opera Mini vs. Mobile • helper apps messaging web • Flash Lite

messaging issues • SMS ubiquitous app native app multi • no guaranteed delivery • lag • MMS rendering differences web messaging • premium SMS costly

native app issues • expensive to maintain app native app multi • 6% market in US • highest data use • still rendering issues messaging web • less supported by carriers

multi-device platform issues • BREW via carrier only app multi app native • rendering issues • device support varies • launch times (esp. Java) messaging web • testing & porting

mobile development Flash Lite QT UIQ Linux Symbian SVG data sync Palm ARM BREW mojax (etc.) Java ME Windows Mobile widgets x15 SMS WML iMode picture “web” XHTML Basic MMS XHTML MP IM ECMAScript Barbara Ballard http://www.littlespringsdesign.com

http://www.littlespringsdesign.com	73
http://www.slideshare.net	28
http://intra.mobiletech.no	20
http://www.mobiloud.it	17
http://www.suggestusability.com	11
http://www.hanrss.com	1
http://www.netvibes.com	1
http://wiki.dextella.no	1

Going Mobile: Choosing target devices & platforms

by Barbara Ballard on Sep 25, 2007

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Going Mobile: Choosing target devices & platforms — Presentation Transcript