Poor user interfaces, both physical and virtual, are part of the package in this modish cellphone.
The physical interface has a number of flaws which flow from both mean-and-tricky and oversimplifying design mentalities.
The device conceals both its power button and its three main menu navigation buttons, then ensures the buttons are physically unpleasant to use. The image below shows the navigation and power buttons on the product. Imagine unpacking this product with the intention to use it as quickly as possible. You have charged the battery and inserted a SIM. You must find the power button. The usual visual cues are red colour and one of the standard international symbols for ‘on’ and ‘off’. In this keypad layout colour has been removed and the power symbol reduced in size to something a little smaller than the letter ‘o’ in this sentence. When you locate the button despite it or its label not being coloured in red but in low-contrast grey on silver, imagine pressing it and experiencing the almost imperceptible travel, lack of physical feedback from distinct edges and tiny size built into the button’s physical design. The central navigation button and alphanumeric keys share these poor tactile qualities.
Though they have been stripped of their expected green and red colour cues, the ‘call’ and ‘hang up’ icons suggest clearly enough what functions the buttons on which they have been printed carry out. Even so, the indistinctly demarcated, flat, open spaces where a simple closed shape raised from its surrounds should be, do not suggest that the handset icon is anything more than a decoration.
The user is expected to know that the unlabelled outer ring of the navigation button conceals a tilting mechanism that has four ‘clickable’ directions. Application menus are accessed with two other well-disguised physical buttons: these are not button-shaped, have none of the coloured trim that appears around all the other keys, have almost invisible backlighting and no printed labels at all, but they do have onscreen labels, ‘Options’ and ‘Back’, as shown in the picture below. This labelling invites confusion in the mind of the user with the functions of the tilting navigation button, which has ‘up’, ‘down’, ‘left’ and ‘right’ directions.
Note: red arrows not included with phone.
The software interface of this cellphone is a messy mixture of Windows-like file tree metaphor and Web-like hyperlink metaphor. It presents users with non-conventional cues and requires secret knowledge for the use of everyday functions.
Those who read left-to-right and who are familiar with desktop computer GUIs, expect ‘options’ to be on the
right-hand side of most menu bars and the ‘back’ navigational arrow on the
left, ie, back to where they started reading and/or looking. Click on the Tools menu in the Firefox Web browser to see an example of this convention.
Applications are accessed by using directional presses of the tilting navigation button and pressing icons. To select from application menus requires secret knowledge of the two silver keys and the non-conventional arrangement of their functions discussed above. To send an SMS, the next most likely thing the average user wants to do with a cellphone, you must navigate to a text message module in the cellphone’s software interface. It is there that the user will discover that ‘predictive’ text mode is on by default, and when engaged it uncontrollably and incorrectly predicts the word you are attempting to type on the keypad, by forming the incorrect word before it has been typed. This function is not switchable unless you know its secret button.
The cellphone’s user guide is supplied on a single fold-out paper sheet, which presents large quantities of small print and greyscale images in a 21-cell grid of 100 x 75 mm ‘pages’ – making each page about the size of a playing card. The instructions for turning ‘predictive’ texting on or off appear in the layout below the following picture.
The user guide has been designed with good layout rules in mind and it follows plain-English technical writing conventions, but its effectiveness is defeated by its having been forced into a physical layout that more resembles a magazine flat plan than a finished document.
The development of ‘predictive’ text software is a quick and dirty fix for the inherent design limitations of a telephone dialpad. A dialpad is not by nature broken and does not need a fix unless it is forced to become a device for typing text. The best design solution for a device that is designed to send text messages as well as receive and process numeric input is shown below.