I like that you can use your mobile phone as an access point for home internet service - no more having two sets! It works great with my Android devices but not so well if it has been upgraded from iOS or Windows 10 Mobile (which are now unsupported).
The app needs some work in terms of how easy they have made using this new feature compared to other providers who already support their own cloud-based services such as BT Infinity Home Hub Pro+. Great way to cut down costs by only needing 1 device instead 2+ phones/tablets etc..