Encrypted phone - for messages/calls

Hey all
I'm looking to upgrade my current phone (Just a regular
iPhone) and wanting something a little more secure and
never realised how many different options there are with
regard to both hardware & software.
I've came across a couple and was wondering if anyone
here has had experience using them as I can't seem to
find much other than generic promo info. The two I'm
looking at are:
IntactPhone - Arcane or Bond (two different models)
Librem 5
Any help would be great, I'm possibly leaning more
towards IntactPhone as it seems it's android based(I
could be wrong) and the Librem is Linux based.
Thanks

I'm not sure I haven't used them before but a Linux based phone definitely sounds more secure + you will probably have more access to it than with a rooted android phone.

Good meme username btw.