When using Liferay on a mobile device you do not have the ability to sort notifications by date due to the ascending and descending arrows missing from the UI.
Steps to reproduce:
1. add notifications for your user (ie, subscribe to a blog and then update it or set up single approver workflow for a blog and then create a blog for review)
2. access Liferay on mobile safari
3. navigate to user > notifications
4. select down arrow by all
ascending and descending arrows would display as they do on the computer, to allow sorting by date for notifications
The arrows do not exist, and therefore notifications cannot be sorted by date