It works well with the connector. Be aware, however, that it also works without it, but it can lead to a kind of loose contact. This is the case with me. Specifically, this means:
If I'm not quite "at the edge" with the screech on the colour palette in the app, the main strip and the extension strip don't light up in the same colour because of this wiggle contact at the connection point.
No, the device is really only the extension to the product (Phillips Hue Light Strip Plus) it is only intended to extend the Led strip by 1 metre. It is not possible to insert a sim card and therefore it is not 5G capable.
Ps. I hope I could help you