Questions relating to mobile computing devices, such as cell phones, tablets, and e-readers. Includes consideration for both small screen size as well as the mobile and "always on" nature of the devices.

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106
votes
19answers
8k views

How could one prevent drunk users from using a mobile application?

Consider a mobile application which for some reason needs to prevent drunk users from using it (e.g. to avoid dreaded "drunk dials" or "drunk texts"). How could "sober authentication" be executed from ...
88
votes
2answers
4k views

Psychology behind $0.99 for paid apps, but $1.00 for donation apps?

I've noticed a trend (at least on the Google Play store) of application prices ending in x.99, while 'donation' apps usually end on the dollar. I see the reasoning behind the psychology that makes a ...
83
votes
13answers
9k views

CAPTCHA on mobile: what are the alternatives?

From a UX perspective, CAPTCHA's are bad, bad, bad. But let's say we have this as a requirement. And it's for a hybrid app (compiled app, but built upon an HTML5 platform). I'm trying to find out: ...
44
votes
9answers
4k views

Should users be forced into a responsive design (without the ability to opt out)?

There is nothing worse than getting automatically redirected to a mobile version of a site, and not having (or not easily finding) a "view normal site" link. It's not just that the mobile site is a ...
34
votes
10answers
2k views

What's the point in electronic devices beeping on keypress?

Many electronic devices, mostly cell phones, by default beep on keypress. What's the point in that? Once a key is pressed their state is changed and that's reflected in the graphic interface anyway. ...
33
votes
12answers
4k views

Should Mobile-optimized sites allow Zooming?

Zooming is common on mobile because sites aren't designed for it; you need to zoom, generally, you don't want to zoom around. Mobile sites are supposed to not need any form of zooming, and often ...
25
votes
17answers
8k views

Tools for creating mockups for mobile device UIs [closed]

I am looking for tools that can help me to create UI mockups for different mobile phones such as iPhone, Android and Windows Phone 7 devices. Is there any application that can do this?
24
votes
2answers
920 views

Should I follow the Android guideline or keep my app's own style when porting it from iOS?

My new project is to port an iOS app to Android platform. Before get started, I'm quite confused on whether I should follow google's guideline since some big titles on Android platform still keep the ...
22
votes
11answers
4k views

Why don't mobile apps have a 'close' button?

I'm a fairly new user of Android and i'm annoyed by the fact that almost all apps lack a "close" button. Is there any reason why developers don't make such an option?
22
votes
8answers
2k views

Are hover states necessary?

We're having a discussion in the UX department here at work as to whether or not hover states are necessary to a UI. We're kind of divided. Here are the two arguments: Against (started the ...
22
votes
4answers
465 views

Should a mobile media app lower volume or pause?

When designing mobile media apps (specifically audio-only ones), what should they do when a notification comes in and phone volume is on? I noticed two different behaviors on my phone - Spotify will ...
22
votes
5answers
2k views

Any Research on User Experience Perceptions of Native Apps vs Web or Hybrid Apps

My organization is looking at developing mobile applications, we have a wealth of web development resources. There are many factors to consider in making the decision of how to develop this ...
21
votes
4answers
2k views

How does use in bright sunlight affect how a web site should be designed?

We're building a mobile web site that will mainly be used outdoors in bright sunlight. What design factors should I consider?
20
votes
8answers
1k views

Is shaking a device to refresh an accepted behavior?

I have an app that displays downloaded information that is cached. I could use valuable space to include a button that is used to re-download the information, or I could simply add a "shake the device ...
19
votes
6answers
742 views

Custom rating slider

I have made a custom interface object to handle user rating in a take-away app I am currently building. But I am not sure if it's intuitive enough in its form. Q : Would you understand an object ...
19
votes
6answers
7k views

How to best indicate navigation menu on mobile

What's the best way to indicate the navigation menu on mobile devices? I see this three-bar icon being used a lot, but do users really understand what it means? Wouldn't a button simply saying ...
19
votes
3answers
6k views

How do people know to “double tap to like” in Instagram? What did Instagram do to make users aware of that feature?

I was wondering about How people know to Double Tap To Like in Instagram? I'd like to know what Instagram did to make that UX decision. I have even asked people who use Instagram "how did you know?" ...
18
votes
7answers
6k views

Hamburger menu icons - should they be on the left or right?

Hamburger menus (the three small horizontal bars: the new menu icon). Should they be on the right or left? I'm only thinking of mobile and tablet applications. The pattern I see the most is on the ...
18
votes
5answers
2k views

Sign up: Double opt-in still best practice? What about mobile?

Everybody knows the normal registration process: Fill in sign up form Wait for email Click confirmation link in email Done (signed in & confirmation by email) IMO this process works because ...
18
votes
2answers
750 views

Is swiping up/down better than swiping left/right for changing months on a calendar?

I have created a custom View to display a Calendar in Android. The display is always 1 month. I'm using a swipe to the sides to switch months. Now I have seen some other Apps (including the installed ...
17
votes
8answers
5k views

Should we provide “back” button for mobile website?

In mobile website for all smartphones (iPhone, Android, Blackberry, Windows phone 7), should I provide a "Back" button inside the webpage even when the browser has functionality to go to back? ...
17
votes
1answer
349 views

Is there any in-depth data on tappability of touchscreen areas?

I'm looking for statistics or other objective evidence on the tappability of different areas of handset screens. When I say tappability, I'm referring to speed, accuracy, and general ergonomic fit for ...
16
votes
4answers
1k views

Is there a better solution than breadcrumbs to cascading categories on mobile?

I am working on a mobile application (Android ICS based) where I need to show a lot of products on screen. Now the products are categorized in several categories which are on X level, where X is ...
16
votes
4answers
11k views

Breadcrumbs: OK to use on mobile site?

Wondering if anyone has thoughts on using breadcrumbs as a method of navigation on a mobile website (for a content site). The breadcrumbs would show the heirarchy of the site as such: Site > ...
16
votes
4answers
589 views

Which UI options are suitable for a mobile search result page?

In our information dense digital world, search is crucial. So is the search result where there are a lot of help for users. But on mobile devices, the screen is very limited, which makes the use of ...
16
votes
3answers
2k views

Asking feedback/rating for a mobile app?

p;                                  ...
16
votes
5answers
6k views

What are the best practices for tooltips on mobile websites?

What are the best practices for tooltips on mobile websites? I'm designing the mobile version of a website for customers' accounts (where they can see their latest bill and settings for their ...
15
votes
8answers
4k views

How to improve the smartphone keyboard layout?

I have loads of problems with the small keys on my smartphone as my fingers cover them completely. I guess most people have the same problem. The Qwerty keyboard layout was designed for ten-finger ...
15
votes
5answers
1k views

Is there any evidence to back up the theory elderly people won't know how to use a smartphone?

I was discussing with my boss earlier and he mentioned that the app I am currently designing for iOS and Android will be used by elderly people. We then began to plan around the same old theory that ...
15
votes
4answers
8k views

How should modal popups and tool tips be handled in responsive websites?

I am reviewing some website wireframes from a client and have decided to make the new site responsive. I've had pretty good luck so far with responsive theming and design from a few past projects and ...
14
votes
2answers
664 views

Should I put “.” at the end of messages for mobile users?

Should I write "." at the end of messages displayed to the user in my mobile Android application? For example: High bandwidth required, switch to WiFi. or High bandwidth required, switch ...
14
votes
6answers
923 views

Password field in cleartext

I'm building a mobile web app that will request a bunch of information from the user (name, dob, address, etc) and am trying to cut down as much fields as I can. I've noticed a new trend where mobile ...
14
votes
2answers
11k views

'Scrolling divs' in mobile land. Yea or nay?

An interesting problem/challenge came up this week where some mobile designs requested a part of the screen be scrollable. This is quite common on desktop sites--typically a little scrolling box for ...
13
votes
8answers
3k views

eLearning: Courses on Usability, UI, UX, or XD? [closed]

Considering User Experience Stack Exchange is in itself an educational tool, creating infomation hubs geared to different personas and users is no longer a tedious task. What are the applications, ...
13
votes
8answers
3k views

Responsive web design Vs Separate website for Mobile

Responsive Web design is buzzword these days. which means to create a same website and optimized for all devices. There are also some website which convert the desktop websites into Mobile website ...
13
votes
8answers
2k views

Do you know any comparative resources like mobile-patterns.com [closed]

Mari Sheibley is the lead designer of foursquare and has created this awesome site comparing mobile UI patterns - for example showing how a feed page looks in different applications, etc. I've found ...
13
votes
4answers
413 views

What's the Best Interface for Entering Canadian Postal Codes on a Smartphone Keyboard?

Typical smartphone keyboards are modal. There is usually a basic QWERTY/Basic punctuation keyboard by default that can be switched to numeric/extended punctuation mode. This works reasonably well ...
13
votes
5answers
2k views

How to represent level of difficulty while selecting a game?

I am working on a menu to select from various (3) game variants shown from top to bottom, each variant offering different difficulty levels. The difficulty will be selected by swiping (touch input ...
13
votes
2answers
522 views

Is showing a loader inside a button on mobile a good practice?

On many apps the "loading" state is displayed inside a blank screen. I was considering having it directly inside the touched button but I wanted to know if it's something common. I don't have example ...
13
votes
3answers
245 views

Cross-platform HIG. What do you use for html5 apps?

When designing an Andriod or an iOS app, it is clear that you should follow their respective Human Interface Guidelines (HIGs). But what do you do when designing a Html5 app? What cross platform ...
13
votes
3answers
2k views

Best practices for scrolling and navigation on touch interfaces: horizontal vs vertical

It's well known that on traditional (mouse/keyboard) interfaces horizontal scrolling goes against user expectations, however in touch devices the matter is not so clear. Are there any best practices, ...
12
votes
7answers
1k views

The myth of mobile context

I've touched on this in a couple of my other questions. I'd like to have a more direct question addressing this issue. Am I right in thinking "Desktop context" & "mobile context" no longer exists. ...
12
votes
4answers
4k views

How to design identical UI for cross platform Mobile app?

One client wants to make a native apps for iPhone, Android, Blackberry and and Windows phone. But he wants to make the look of UI identical on all devices as much possible. 1) Is it technically ...
12
votes
2answers
2k views

Do iOS / WP users recognize the Android share icon?

I've been assigned the task to add an icon / CTA to enable users to invite people to our application from their contact list. Due to width restriction, especially with localization, one of the ...
11
votes
13answers
3k views

Custom UI vs Default UI [closed]

This question is mainly for iOS/Android developers, but anybody can answer. Do you prefer using the default UI provided by the OS or do you prefer using custom UI. I've heard many developers argue ...
11
votes
6answers
2k views

Should I stick to Google's Android UI Design Patterns or not?

Both the official Twitter application and Facebook application use a similar set of UI design patterns in their apps. These patterns were set out by google themselves in this blog post. The thing is ...
11
votes
4answers
493 views

How should I name the paid app VS unpaid app on mobile devices?

I will be releasing a paid and unpaid version of my app on iPhone and Android. How should I name these two versions? Some popular choices I've seen are: Namezilla Free + Namezilla Namezilla Lite + ...
11
votes
7answers
2k views

Is there a “best place” to put ads in an app to avoid user irritation or will users look over them anyway?

I'm embarking on a new project and one of the stipulations from the client is that the Android app I am designing MUST have banner ads in it but they are also to be put where they will "cause the ...
11
votes
4answers
291 views

Should you optimize mobile experiences based on individual handedness?

In abbood's question "How to implement a stack exchange style voting for mobile?" he answers his own question with the following mock-up: My immediate thought was that the up-vote control was on ...
11
votes
3answers
560 views

How do you nudge users to download your native app?

I was reading an ACM research paper recently that considered users' revisitation patterns. The authors found that users tend to revisit native apps far more often than they revisit pages in browsers. ...