Does this alternate reality have equivalent technology to smartphones, computers, etc. Because if they don't, I find it highly unlikely that they would even recognize that there would be information to get off the phone, let alone be able to figure out how to do it.
Regarding the information on the phone itself, presuming they're essentially scraping the SSD, they would get anything that was stored on the phone—contact numbers, saved maps, saved games, pictures, personal notes saved directly to the phone rather than the cloud, probably transaction logs (e.g. "clicked on this and then did that sort" of things, but a lot more technical), etc. News articles and such would likely only show up if they had been saved. Anything that needs internet access (i.e. anything on the cloud, anything requiring an internet connection to work, GPS, etc.) wouldn't work.