Cv and cover letter for PhD admission
Write about your research (interests, current and relevant former positions, and your experience/skills/goals, all in relation to the position you are applying for) in the cover letter. Only mention positions and education milestones (and possibly supervisors of Bachelor's/Master's thesis) in your CV (and publications, if any, in a separate section).
The cover letter doesn't have to be short &quot;short&quot;, 1-2 pages is totally fine in my experience.