One reason can be that the MNC first conducted telephonic interviews for all suitable candidates.As it is an MNC so lot of candidates would have applied for that particular post .So telephonic interview happened for all those suitable candidates and the company is now calling the shortlisted candidates for personal interview.Another reason can be that the hiring decision for the particular post would have been put on hold for some reason.When HR got the nod then they called your friend.Whatever be the reason it is always advisable to go well prepared for the interview.
Regards
Swati Verma
Regards
Swati Verma