I have an iPhone 6s, and there are some very, very, long text message conversations on there that I'd like to be able to read through on my PC for the sake of convenience.
I've already backed up my iPhone to the PC, but the files are stored without a file extension, so I'm not exactly sure how to view them. I've tried opening some of the files in a text editor, but they seem to be either compressed or encrypted (even though I never selected the option to encrypt the backup when backing up the iPhone from iTunes) because it's just a chaotic mess of unusual characters.
I know there is software out there, which costs money and supposedly allows you to do this, but they don't look trustworthy so I thought this might be the place to post a question before taking any further action.
Windows version: 1903 (OS Build 18362.476)
iPhone 6s iOS 12.4.3 (but the text message histories date back to when I was also using other OS versions)
Does anybody know how I can view these backup files, ideally for free or with some freeware software that doesn't have malware, spyware built into it?