Vodafone GigaCube vs O2 HomeSpot - do telephone and TimeCapsule work?

As an alternative to Vodafone's "GigaCube" with 250GB restriction, I came across o2's "HomeSpot" with unlimited data volume.

The GigaCube is advertised that it can be connected anywhere in Germany. On the other hand, dslweb.de says that the CO2 HomeSpot is bound to a fixed address; on the contrary, I've read and heard that you can also take it with you on the go and connect it somewhere else. What now?!

Furthermore, Vodafone advertises with peak values of up to 500Mbit and O2 per tariff with 50Mbit or 100Mbit. I surf and stream a lot on the net (in HD, i.e. Neither SD nor 4K, depending on the offer, in addition to Prime Video, monthly AppleTV +, Disney +, Sky Ticket or Netflix - and YouTube or Vimeo or media libraries, of course). So far I only had 16Mbit. Which speed or data volume would be sufficient as a quantum leap for a single household?

o2 also offers a fixed network flat rate. Hence the basic question: can a landline telephone be actively connected to the HomeSpot? In some devices the slot is deactivated… And: can you use it to access your Apple TimeCapsule as a Wi-Fi hard drive?

Love from.

If you stream a lot, the 250gb could run out, so an offer with unlimited data volume is more suitable.

And yes, the O2 Homespot is only activated for certain LTE cells and is therefore tied to a specific location, so just take it with you and plug it in anywhere else. In itself the 50 Mbit should be enough, because with the 100 Mbit contract you probably won't get to the 100 Mbit anyway, depending on the load, and 50 Mbit are also sufficient for your purposes.

The O2 HomeSpot is intended as a normal landline replacement, so you can of course connect a phone to it and use it to make calls.

I can't tell you for sure whether the Apple TimeCapsule will work, but I don't know what to do against it.