Nokia

Only a normal phone interview with normal questions like technical background and your working experiences. Those have already been contained in your CV. No too many further questions. I guess this was only a filter stop for the position.

4 rounds of technical questions. These are average on C++ and designs.

Rather straightforward. You might get invited to a more psychological "test" with group tests and where you have to present a topic of your choice. An interview with your hiring manager is also included. That's then more about technical topics.