USB-C power adapters
This article is not up to date. Which USB power adapter is recommended for iPhone 12 MagSafe fast charging, or for the MagSafe Duo Charger? iPhone 12 is not even listed as a device option.
iPhone 11
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Best reply
The 20W USB-C Power Adapter is recommended for all three.
https://www.apple.com/shop/product/MHJA3AM/A/20w-usb-c-power-adapter
"Compatibility
iPhone Models
iPhone 12 Pro
iPhone 12 Pro Max
iPhone 12 mini
iPhone 12"
https://www.apple.com/shop/product/MHXH3AM/A/magsafe-charger
"Recommended
20W USB-C Power Adapter"
https://www.apple.com/shop/product/MHXF3AM/A/magsafe-duo-charger
"Recommended
20W USB-C Power Adapter"