Struggling to understand the new BBM update I have an old iPhone that had the old version of BBM (Blackberry Messenger) installed. If I were to charge it and load the app (now that it is off of the AppStore and shut down) will I still be able to access my old chats or see old photos?
...will I still be able to access my old chats or see old photos? 


No, they’re gone.

BBM messenger was shutdown May 31st, 2019 and users had until the following Friday to download messages, photos, videos, and files.

Source:  C|Net, BlackBerry Messenger shuts down: What you need to know

The “new” BBM app is their enterprise version and it’s completely different and is referred to in the article as a “replacement.”  Nothing was migrated from consumer to enterprise.