I would like to install Spotify on my Gabb Z2 phone. The Gabb phone runs a modified version of Android that is programmed to have only default apps and no store. They somehow managed to get their own app on there, which leads me to believe that there is a way to install apps on this phone.
I try to go to Privacy > Permission Manager > Search > Autofill where the developer options are so I can turn on USB Debugging, it does nothing, the bug was found and patched so that there is no way to access the options. As a side note, I also tried going to About Phone and clicking on the build number 7 times.
I have scoured the internet looking for the solution to my problem, I came close but I was blocked. How to install APK on Gabb Z2?