It must be an MNC, so many layers and hours. Lengthy process.

For IT line I'm not really sure. The phone interview is a preliminary selection process, to check for competent candidates and call them for an official interview.

My guess is that when it comes to your official interview (face 2 face), you'll be meeting with Dept Head. There's a possibility that there'll be at least 2-3ppl in the room to ask questions and you'll be grind in your technical skills. They might actually ask you to draw diagrams/ explain certain technical aspects. Maybe they'll ask you demonstrate certain things on a pc. When it involves something technical, there's a high chance.

I suggest you contact the HR and check with him/ her on what to expect for the interview. Ask whether there'll be any written assessment (some companies conduct them) and also ask for the names/ positions of the interviewers so you can address them accordingly. Do a little background check (if possible). Also probe the HR for any other info you can get~ You can email/ call directly, tho the latter works faster.