Which type of Samsung phone is this exactly?

Because I know when it comes to iPhones, somewhere around the iPhone 4S-5 era it was impossible to recover anything because of the way the data was stored on the device. It was basically encrypted and if you wiped it the key was destroyed and backup was not possible. It’s been years since I looked into this but this I am sure of. It’s because I wanted to sell an old iPhone and wanted to make sure my data was completely safe from the new user.

Find this out first before you spend money on a data recovery service.