I just upgraded to Infinity and received a Smart Hub, all the packaging were thrown away before I opened the recycling bag, this requires the return address label with a bar code from the Smart Hub packaging, which has been thrown away already. If I bring the bag to the post office, will thy accept it without my return label?
I wouldn't be in a rush to get rid of it if I were you!! You might be glad of it.
The HH4 won't work with Infinity stand alone, you would need a separate Openreach modem as well.
I doubt the reliability of all Home Hubs.