I had a phone interview a week ago for SDE 2 position at Amazon. In my experience, the interview was easy.
It was an hour long interview. The interviewier asked one LP question and one follow-up question (~10 mins) followed by a coding question. The coding problem is closest to this question https://leetcode.com/problems/number-of-islands/ and a follow up question to expand the solution for a three dimensional space. Overall, the interview went well and got a call from the recruiter the next day for on-site round.

Hope this helps and good luck!