7 Usability Guidelines For Websites On Mobile Devices

More and more mobile phones users are browsing andbackground colour was changed and contrasted
searching the Internet on their handsets. The UK, forstrongly against the page's overall white background.
example, has neared saturation for mobile phones and4. Make user input as simple as possible
many handset browsers can now handle sitesAllow users to input information by making selections
designed for viewing on computers. Indeed 20% of UKinstead entering free text (or at least provide this as
mobile phone users now use the Internet on theiran alternative method). Entering text on a mobile phone
mobile devices (source: 3G.co.uk).can be painfully slow and error-prone on the typical 12
If you design websites for PC viewing the you need tobutton mobile keypad. Mobile users are more likely to
consider how your sites will look and work on mobiles.make mistakes (due to misspelling or mistyping) or
The bar for mobile specific sites has been raised bytake shortcuts. Sets of well thought out links on quick
some good sites and others need to close their gap.loading pages can be very usable.
As the mobile Internet has developed savvy usersOn Thomson Local, for example, it isn't possible to
have come to expect higher standards whenbrowse businesses or locations. Users tend to
browsing on their handsets.abbreviate search terms (i.e. business type) which
These 7 guidelines are based on actual user researchleads to inappropriate search results. The Odeon's
conducted with mobile phone users. Users were askedmobile site allows users to find a cinema by searching
to carry out typical tasks on popular websites using aor browsing. Users that search often make more
mobile phone browser. The issues they encounteredmistakes than those that browse, the latter usually
were used to produce these guidelines.finding what they're after by only selecting 2 links.
1. Meet users' needs quickly5. Only show essential information
Mobile and PC users can have different reasons forMobile phone screens are of course tiny and have
visiting the same site. Mobile users are more likely toonly a fraction of the area or pixels on most PC
want information to help them at that location or time,monitors. Be sure to identify page requests coming
such as finding directions or finding out what's going onfrom mobiles and only send down the most essential
nearby. Also, they might want quick entertainment toof information. Otherwise, important content might be
pass away a short period of time, like something topushed down or difficult to find amongst everything
read on the bus or while waiting to meet a friend. Forelse on the page.
your site, predicts users' needs and fulfil these asAlso, most mobile phone users aren't on flat rate data
quickly as possible. Exceptions to this are items peoplepackages so the larger the page the more users have
download to keep on their phones (e.g. buyingto pay. Users become frustrated if they have to pay
ringtones).to download page content they don't want.
Yahoo! does this effectively with its new mobileHeader links on the BAA and Thomson Local
oneSearchTM service. Searching for 'Cinema'websites take up lots of screen space and make
produces a list of cinemas near users' location showingimportant information hard to find. 'About BAA', 'Help'
their address and phone numbers. Clicking the 'Call' linkand 'Advertise with us' aren't priorities for mobile users.
next to a number opens a call dialogue box on the6. Place basic browsing controls on the page
phone. A further enhancement would to be enableTo save screen space, mobile browsers often don't
users to click through to a map of a venue.display basic controls such as 'Back' or they display
2. Don't repeat the navigation on every pagethe web page in full screen mode. As such, always
Usable websites designed for PC's usually repeat theinclude a 'Back' button on every page other than the
navigation on every page. However, screen realhomepage.
estate is precious on a mobile screen and navigationTransport for London's mobile journey planner places
can push content off screen. BAA's navigation, forbasic controls, such as 'Next page', 'Back to results'
example, takes up the whole screen so users have toand 'New journey', at the bottom of each page.
scroll down far on every page to get to the main7. Design mobile-friendly page layouts
content.On your website, make sure you design the page to
For your website on a mobile, only display thepresent content in the right order and render well on
navigation on the homepage. On other pages onlymobile screens. Website layouts for large landscape
include links back to the homepage and back to thePC screens usually don't work well on small portrait
last important point along the path users have taken.mobile phone screens. Furthermore, mobile browsers
Show these links at the top and bottom of the pageand page transcoders usually vertically stack pages
so they're never too far away. BBC Mobile does thissuitable for portrait display.
effectively with a clickable breadcrumb trail at the topIt's often best to have completely different page
and a list of links at the bottom.designs to meet mobile users' needs. If mobile phone
3. Clearly distinguish selected itemsusers are a big part of your business then you should
Mobile phone users tend to have poor cursor control.consider creating a site just for mobiles. Sites that are
This is because moving the pointing device down (withdesigned for mobiles perform significantly better with
the joystick or direction buttons) simultaneously scrollsusers than those that aren't.
the page and highlights links, buttons and form fields.For example, BAA's website renders very poorly on a
Due to this lack of control it's important to clearlymobile screen. Page sections don't appear where
feedback to users what item is in focus. This can beintended relative to each other and pages look poorly
done by changing the appearance of an item to makedesigned. Single word link text can be wrapped over 4
it stand out from everything else. For example, youlines making it difficult to read. Conversely, Transport
can change the font and background colour of linksfor London's mobile homepage contains simple
and buttons.categorised lists of links. Users find this easy and quick
For example, O2's mobile portal doesn't highlightto use.
buttons well. It adds a blue border on a lighter blueIn a nutshell
background that isn't noticeable. Users have to moveDon't neglect your current and/or potential users by
the joystick around to find the cursor. Worse still,not designing for mobile phones. Follow these guidelines
Thomson Local only distinguishes form fields bybut don't forget to usability test your website on mobile
making their border slighter thicker. In contrast, theirphones. Real usability testing will always capture things
highlighted links stood out because the font andthat can't be covered by general guidelines.