Do I return sim with Trade in

No.

TO PROTECT YOUR PRIVACY, YOU ACKNOWLEDGE THAT BEFORE SENDING IN YOUR DEVICE TO US TO RECEIVE CREDIT YOU HAVE: ERASED YOUR CONTACTS, CALENDAR, PHOTOS, MESSAGES, CALL HISTORY, EMAIL, TEXT MESSAGES, VIDEOS, WEB BROWSING HISTORY AND ANY OTHER PERSONAL, CONFIDENTIAL OR SENSITIVE STORED INFORMATION FROM YOUR DEVICE, AND REMOVED THE SIM CARD AND MEMORY CARD,