Pros
The reputation of the company. Valuable cultural experiences if you are interested in working with/in Asia. Benefits.
Cons
The working style! Samsung has a very strong working culture. It is very hierarchal, there is very little innovation and most orders come from the top and have to be followed at any price, in most cases without reflecting what is a good idea and what is not. Deadline are always short, and you are expected to overwork and sometimes weekend work to meet them. Being a foreigner in Samsung is not easy. People are recruited with the promise that Samsung employees can communicate in English, that is far from true. As a non-korean you should be prepared to feel like an alien at times and be left out from many of the team interactions, knowing what is going on is not easy. The career path for a non korean speaker is very limited.