How to resolve error (9). 130A.0000 when setting up a brand new iPhone 17?

If you have wifi, a new phone will set itself up from the Hello screen without resort to any computer.

Set up your iPhone or iPad – Apple Support

No it shouldn't. You ought not be concerned with DNS settings or similar minutia.

Devoid of context such codes are utterly meaningless, and even if its meaning were known it's likely to be unhelpful.

Since your iPhone is new you ought to contact Apple Support. Use the Support link on these pages.

Are you using the cable that came in the box with the phone? If not, the cable or adapter you're using may be bad.

Also, disable or remove any antivirus, firewall, or vpn you have installed on the PC.

WarrenJackson wrote:

Using the PC is now the only way forward and it's not working out very well.

I am confused by that comment because it is never required to use a PC (or a Mac for that matter) to set up a brand new unused iPhone. It might be required if the iPhone needs to be restored to its factory settings (Restore your iPhone, iPad, or iPod to factory settings using a computer - Apple Support) but a brand new iPhone doesn't need to be restored. It's new. Hence my confusion.

In any event I doubt you're going to get anywhere without contacting Apple. If the iPhone needs to be restored, perhaps it's defective, and should be returned for a refund or exchange. In either case the answer is the same: contact Apple. Use the Support link on these pages.

There was no need to use the PC at all.

Thanks for the explanation.

The only time it's necessary (see • below) to connect an iPhone to a Mac or PC is if it needs to be restored: If the Restore screen appears on your iPhone, iPad, or iPod touch - Apple Support. The need should be rare; so rare I have never personally run into it.

• outside of the usual syncing or backup that is

Is that in fact what's going on with your iPhone? If you are not encountering that screen on the iPhone, perhaps it's attempting to prevent you from doing that.