The bugs we’ve encountered ranged from app specific usability issues to general issues common amongst many apps. Today, we want to highlight 5 issues that we’ve encountered repeatedly, using some of the most popular apps as examples. The list below is presented in no particular order.
Handling Bad Network Connections
iOS devices are inherently mobile, so apps cannot assume permanent, fast connections to the internet. Tasks requiring network connections should generally be asynchronous and notify the user if they fail due to lack of connectivity. Facebook Messenger and iOS FaceTime handles this nicely.
In Facebook Messenger, a warning message is displayed prominently, indicating that Internet connection is required for the app to function.
In FaceTime, an alert is displayed with buttons that take the user directly to network settings.On the other hand, Vine and Instagram do not handle this well. In Vine, users see a sad face and posts simply do not load. There’s no indication that this is caused by network connectivity. Instagram shows a large reload button on images that cannot load. This button has no effect while network is off.
Handling Chinese (extended) Keyboard
iOS has a number of international keyboards built in. While most of these keyboards are of the same size, a few keyboards have extended sections. The Chinese Pinyin keyboard is an example of the extended keyboard. Apps should not assume a fixed keyboard size and should adjust their content appropriately.
The Google+ app, as shown above, has a small button above the normal keyboard that hides the keyboard when pressed.However, when the Chinese keyboard is used, the extended keyboard covers most of the button, rendering it useless.
Using the device in landscape mode exacerbates the problem. In Twitter, the extended keyboard, custom buttons, navigation bar, and status bar combined take up almost the entire screen, leaving no room to display the input text field.
Handling Privacy Settings
iOS privacy settings control third party app access to photos, locations, and contacts. Apps needing access to these assets need to handle cases when access has been denied either inside the app or outside through system settings. A great way to handle this is to let the users know about the necessary permissions and give them instructions on how to turn them on.
A good example of how to handle this is the Facebook app. When it lacks permission to access location, it shows a clear message with step-by-step instructions for users on how to grant access.
On the other hand, when Vine lacks permission to access location, it gets stuck searching for nearby places with no indication of what’s wrong.
Validating User Input
Many apps allow users to input username, birthdate, or other account information. Basic input validation should be implemented, and if the user’s input is invalid, a clear explanation should be presented.
Skype does not validate user’s birthdate, so a completely bogus date can be entered.
Path has very few restrictions for usernames. In the screenshot above, the username is set to a large number of blank spaces followed by a period. Path does not allow usernames to contain only blank spaces and will fail silently (i.e. it does not save the username and shows no explanation).
Handling Simultaneous Button Presses
iOS devices support multi-touch and apps should properly handle cases when users intentionally or accidentally touch multiple buttons at the same time.
In Pinterest, tapping ‘Pin it’ and ‘Send’ at the same time when viewing a pin will cause the app to enter a bad state.