There is a specific and yet extremely widespread usecase for switching account on a phone: to distinguish between personal and business use. I'm a different per

There is a specific and yet extremely widespread usecase for switching account on a phone: to distinguish between personal and business use. I'm a different person at work with my phone than I am at home or at a pub. I don't want to clutter my gallery at work with thumbnail pictures of last week-end debauchery, though I do want to see the whiteboard pics I took every day after each design meeting. The notifications I want to receive at home are not necessarily from some automated JIRA sender. Moreover, I've been working on projects that are founded on the assumption that the device is "public" (for instance a phone wired to a bus stop) or at least "shared": the devices that, say, train operatives use, could be tied to the train rather than to the user. I believe we would all greatly benefit from multi-user accounts on the phone.