Syncing text mssgs to my iPhone X or Dell lap top

Is there an app or what is the best way to sync or ftp transfer files and text from an iphone 8 to my iPhone X or my laptop I have a 2018 Dell Inspirion it has 256 ssd 16G ram so it is able but dont know the command or the app for my phone to get to sync thos text or her maps. I k ow shes cheating just have to prove it. She uses maps to create text for nearby and all that jazz. any info helps thanks