Recall concrete examples
Prepare two or three real examples from work or study: what you did, where you were strong, which difficulties appeared and how you handled them.
Prepare questions
The conversation becomes more useful when the candidate asks about the daily routine of the role, training, requirements and the steps after the application.
The best preparation for a first call is an honest picture of your experience, expectations and limits.
Do not hide limitations
Physical, time or professional limitations are better discussed early. This avoids false expectations and helps the recruiter match you to a more suitable role.