Often, yes.  Your iPhone, cell phone, and computers will usually always be analyzed by the Connecticut State Lab, which will write a report and will include every possible illegal image.
Top Connecticut criminal child pornography defense attorneys will work with forensic computer experts to challenge two main things:  (1) whether the images were actually accessible or located in “unallocated space” and (2) whether the images are clearly illegal child porn or are instead “age indeterminate.”