The full name of James Franco's character only appears twice, and is never spoken. It is Richard Wiess. You see it first in Paris, when Michael (Liam Neeson) and Anna (Olivia Wilde) are walking in front of a building (you can see that his work will be featured there soon)and again when Julia (Mila Kunis)rings the buzzer at his building in New York. The name next the buzzer is R. Weiss.
In the scene that Anna looks at her iPhone in Paris, it shows the carrier as AT&T. AT&T doesn't offer service in Paris. One of the local phone carriers would come up on her iPhone screen, even if her home service was with AT&T.