Is the message on Katrina Kaif's T-shirt for Ranbir Kapoor?

Katrina Kaif

Katrina Kaif was recently seen at the Mauritius airport sporting a bright red T-shirt with the 'Hang Up That Telephone' legend.

The actress was in the island country for the shoot of a brand endorsement. Is that message for beau Ranbir Kapoor, who is tied up with the promotions of 'Bombay Velvet' and perhaps been too busy making work calls?

I am trying to figure that out.