Rooted Galaxy S25 setup questions: Fixing Error 12 with GPS Joystick & looking for code-injection alternatives

Hey everyone,

​I recently set up a temporary root on my Galaxy S25, but I'm running into a few roadblocks and wanted to check in with the community for some advice.

​The Error 12 Issue: Right now, I'm trying to use GPS Joystick, but it keeps throwing Error 12 ("Failed to detect location") in-game. For those of you spoofing on newer Samsung devices with a root, what specific modules, downloads, or system modifications do I need to have active to get a standard joystick working without hitting this error? (I assume I'm missing something specific regarding system-level mock location hiding or module configurations).

​Code-Injection Apps: Aside from the standalone GPS Joystick app approach, what are people currently using for apps that inject code directly into the main Pokémon GO client rather than using a sideloaded/modified third-party app package?

​Any pointers, recommended modules, or general workflow tips for a rooted Samsung setup would be hugely appreciated. Thanks in advance!