IBPS SO Main Exam has been conducted on 27th January 2019. The result for the same has also been declared.
So, you should prepare for the IBPS SO Interview, which will be conducted soon.
You can check the IBPS SO Interview Preparation Tips here.
Interviews are not only being conducted to test your knowledge and abilities required for the job but also to assess your personal behavior and attitude as well.
Best of Luck!