Don't even try to understand.
Xzp = xz1, but:
Xzp has no night mode, xz1 does.
Xzp doesn't support treble, xz1 does.
Xzp has no new call app, xz1 does.
Do you feel premium?)
Some reason Sony make older models downgradet artificially. For example all they need to do about camera quality and mx400 potential is switch off they software limitations. But that's newer happens, so we should looking forward to custom rooms.
