Why my phone can’t UpdateiOs 13.4
I can’t download Facebook
Question marked as
iOS 13 is no longer applicable to ANY iPhone. (Any phone which ever could run 13, could also run 14 or later)
So, assuming that you’re running 12.5.7 on an iPhone 6 or earlier means that you’re at the end of the “update road” iOS wise.
To run any apps requiring an iOS newer than 12, requires a newer phone to do so.