You are aware that fingerprints are mainly done through your browser (except Tor), and it can be used to fully or partially to identify you or your machin even when persistent or zombie cookies can't be read or stored in your browser, or when your IP is hidden (VPN), and even if you switch to another browser on the same device.
However, the collection of device fingerprints from browsers relies on the availability of javascript. Something easy to avoid or to limit when using mobile phones and by running privacy softwares, like Adguard or Cookies (Sweept Production) that I am using to block ads and trackers on my iDevices.
Furthermore, sandboxed used by Apple will exhibit so little uniqueness that most fingerprinting techniques involving technical information about the device, the browser, and the font list will not be sufficient to create a unique fingerprint.
My 2 cents ;-)