Whats the advantage of buying a MiFi box as opposed to using an old phone? Ive got an old iPhone from 2013 that wont run the current iOS so I replaced it, but it works fine as a hotspot provider. I read somewhere that the presence of an external antenna didnt give any benefits when tested back-to-back without one. I suspect MiFi boxes are harder to set up (a phone has a great interface). Anyone tried both together and compared? (I can see you dont want to use your normal phone as a hotspot, as you have to use a local SIM card, and so miss any calls to your normal UK number).