I have the Uber app on my iPhone. My account is tied to my iPhone #.
I'm going to the UK this fall and would like to use Uber in London and possibly in Edinburgh as well. I will have a MiFi with me, so will have wifi wherever I go, as long as it's turned on.

To order Uber car I just use the app, correct? However, if driver needs to call me (as they seem to need to do a lot of the time) should I provide my Skype number -- and add that to my Uber account? -- or just hope they'll text instead and I can get it on my regular phone number. ?

I'm not sure I understand how this works, or even how to ask the question (obviously).