New answers tagged accordion
If content is king, then the scarcity of viewing space on mobile devices makes it even more important to make your decision not based on general principles but based on user requirements. Keep in mind that if you make something open it will take up a lot of the real estate on the screen, so if it is not one of the most important things that the user needs ...
That depends on the content you're displaying. If there's any value in comparing the content in multiple cells (eg. product specifications) then allow for many to be expanded at one time. However if content of the cells exclude one another (eg. payment method) then collapse earlier cells to improve scanability.
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