DSE Intern applicants have rated the interview process at AT&T with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 65.7% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -
First multi-part online assessment, then about 30 minute Recruiter screen, then 1 hr technical interview, then 1 hr final behavioral interview. Whole interview process was long but very smooth. Interviewers were nice and helpful.