0
votes
1answer
114 views

Why do most smartphones need to hold the power button in order to startup?

All of the smartphones I've owned required to hold down the power button for several seconds (ranging from 3 to 8 in some cases) in order to startup from a shutdown state. I've wondered why was such a ...
0
votes
2answers
84 views

Best way to have volume buttons on phone?

I've been curious about how the volume buttons for phones could be improved and how they currently work. There are a couple different things that can be changed: Ringer volume Playback volume ...
3
votes
5answers
1k views

Why do many/most (Android) phones have the power button opposite the volume buttons?

I have just bought a Nexus 5 phone. I love the phone, but like my previous two phones it gives me grief when turning the thing on or off. The problem is that the power button is almost directly ...
1
vote
4answers
374 views

Choosing which mobile devices to use for usability testing

When performing usability tests on mobile devices the results are influenced by the devices tested on. For example different sizes, OS-versions, resolution etc. To conduct a thorough test it is ...
8
votes
5answers
925 views

On mobile phones why is the green (call) button at the left and red (hang) button at the right side?

Some old mobile phones have switched position of green/red buttons. Currently the green button is at the left and red button is at the right side on mobile phones. Why? That is rationale? Which ...