Absolutely not without their permission, but honestly in this day and age, I think it's dumb not to go through the phone of a potential marriage partner. You want to get to know somebody, get to know their phone. Now you shouldn't be going through their conversations. What you want to go through is their YouTube subscription list and their recommended page. Go through their TikTok for you page because that's based upon what they watch. Go through their Instagram and all the type of stuff. Go through their Kindle, Audible, Script, whatever. The question is, what are they feeling their head with? Don't ask them, go to the source.