​@mr_aqib_shuja_one  Hi there your question about Sims just to be clear you can't have a physical Sim and eSim with the same working number. But you can have eSim and physical Sim card's working independently, and you also have what's called Multi-SIM card . Not all multiple sim device work the same way there's a difference in the switching or radio technology so you would have to check with your device manufacturers detail's. But for the average person most UK based devices do support independentl phone number's to communicate on simultaneously to answer you question. 

Joe

The new iPhone machine takes eSIM, but the older machine does not. The old machine asks for some kind of “registration”. Have a tariffless provision, and therefore desired to give 4g signal to the other machine as well, but only for the internet provisions, and not for any number-bonded provisions.

Some network providers were providing tablet machines, with a number, but to specifically enable the machine to be brought online.