Comment by charrondev

I recently tried to migrate my Grandmothers Galaxy S21 phone to an iPhone and we had to return the iPhone because try as I might I could not get get her 30000 text messages (including 1000s of images and messages from people that are now dead) to transfer over intact.

The built in services transfer failed as did third party software.

Honestly I can’t tell you much about transferring the other way, but interoperability is definitely not seamless in this respect.