I want to buy a new charging cable and USB adapter for my iphone 12. What should I buy that is compatible?

Your iPhone is compatible with MagSafe wireless charging (which is faster and more convenient).

For that to work, you would need:

1. 20W USB-C Power Adapter.
2. MagSafe Charger.

If you also need the cable, then click ▶︎ USB-C to Lightning Cable.

they are all compatible from ac charger 5watt to a mac charger if it use usb-c

My opinion 5w to 20w is best I’m useing 5w Fast Charger