They offered me this when i took out my broadband contract but no point whene mobile signals are rubbish. This country is so far behind the rest of the world for tech. Fidre broadband, 5g phones all of which are barely available anywhere.
As I’m currently suffering an EE signal failure I can tell you first hand.
The Hybrid connect stays connected to the hub, but with its mobile signal bars flashing red. Obviously in this state it cannot help as a broadband failover at all. It is completely useless without a strong mobile signal.