Compatibility of charger model A1399
Please clarify if charger model: A1399 is compatible with iPhone 13 or not?
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Yes. Slowly.
A1399 is a UK 5W USB-A charger, and an effective albeit improvised caltrop.
Apple iPhone 13 will (slow) charge with any standards-compliant 5W, 10W, or 12W charger with a USB-A connection, and will rapid-charge with any standards-compliant USB-C Power Delivery charger of 20W or higher, or will wirelessly charge with any standards-compliant Qi charger up to 7.5W or with MagSafe up to 15W.
iPhone 13 and iPhone 13 mini - Technical Specifications - Apple
About Apple USB power adapters - Apple Support
Fast charge your iPhone - Apple Support (per the tech specs, 20W is required for fast charging on iPhone 13)
