1440x2880 pixels. Source: https://www.gsmarena.com/googlepixel2_xl-8720.php

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Looking for a way check for Mac app updates not from the Mac App Store? Then head over to http://mac.majorgeeks.com and check out what's new.
I just found 6 apps that had updates released in the last week.

Here’s how snapshotting now works: https://support.apple.com/en-us/HT204015

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Nope, not I re the reformatting of an APFS drive to HFS+.

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Yes, local backups were introduced many OS iterations ago, but the implementation under APFS is vastly different. For one thing, you used to be able to disable local backups (they weren’t referred to as snapshots until High Sierra).
Such local backups were only on laptops, now under macOS 13, they are made on APFS-only drives. (If I’m reading the documentation correctly.

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That was a better cuppa. This time I used fresh milk. Tea, Earl Grey, French , hot.

The potential was there for a nice cup of tea. Potential ruined by the milk being slightly off and curdling in the tea.

I don’t notice it in action.

How do you mean? Expensive in what way?

OK, now on the Fusion drive iMac (HFS+; no APFS). There are no local snapshots: either they're not taken because it's a desktop Mac or because it's not supported by non APFS systems. I suspect the former.
The only time I see snapshots is when cloning the drive to an external HD using SuperDuper! app. The first stage of a SD! backup is the creation & saving of a snapshot.
When booted into ⌘R mode, no local snapshots appear.