Include the timestamp in mobile views.
I pretty much exclusively use the "List View", which on desktop includes the timestamp on each row (5m, 1d, 1w etc). That info is really handy to see at a glance, but gets removed on smaller screens. It would be really nice if it could still appear in mobile, even if it has to be a really tiny font.
There is no place for time so I'm not sure that I will add it.
You can try to rotate screen -- time should be visible in landscape mode. And you could expand list view item and see item time after author.