Migrated from https://lemmy.one/u/priapus
If you’re not willing to flash a rom, then it comes down to trusting Apple or Google more. Although, android also has the benefit of a much larger selection of open source utilities that you can easily install from F-Droid. This is enough for me to prefer even stock Android over iOS, because 99% of the apps on my android phone are open source and I feel I can trust them fully.
There is no open source RCS messaging app afaik