I would try and find a pinout for the specific battery. The connections will include V+ and V- and then some others like batt temp, and some other diagnostics stuff. I’m not intimately familiar with newer phone batteries, you may or may not be able to get the battery to charge if you dont have the right circuitry
If you had it installed it from the play store you could theoretically get the name from there. Here’s a Google support page for how to look up apps you’ve previously installed:
https://support.google.com/googleplay/thread/124657633/how-do-i-see-previously-installed-apps?hl=en
Even with inflation the cost of making films (especially in the US) has gone up a lot. Just a rough Google says that 20 mil in 1980/81 is now roughly 75 mil. That makes the new Indie film more than 3x the production cost
You should have treated her like she’s a computer program!