[Update] The 18W charger you got with your iPhone 11 Pro won't officially fast charge your iPhone 12
Apple's iPhones don't come with chargers anymore and you'll need to buy one to fast charge.
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iPhone 12 iPhone 12 and iPhone 12 Pro requires a 20W USB-C charger !!!
- Thread starter jamescooper89
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Thank goodness I don't need "fast Charge". SMH
Doesn’t require the 20w, it’s just faster with the 20w.
The title is misleading. It doesn't require anything. You can still use a USB A to lightning cable with the 5w bricks if you want.
This is what I was using the old brick and old cable - both from APPLE.
Maybe is not the charger the problem but the iPhone 12Pro
second time charging at night
and in the morning it was at 70% once and 80% today and the battery icon was still green while connected too the cable
Unplug and plug it back then is ok. Could be the iPhone or the brick not enough ?
I've charged my 12 Pro with the 5w adapter and old USB A to Lightning cable - no problems. I also am using a 5w Anker wireless charger (even slower) - no problems.
I prefer to use my 18W USB C to Lightning setup as it charges a bit faster - but my phone spends most of its time between 85-100% anyway so really doesn't matter. The phone asks for less and less power after you pass the 85% charge level. Past 90% the phone can ask for under a watt of power sometimes. Any 5w charger should be able to supply that with ease.
Now for a 11 Pro Max or a 12 Pro Max - the 5w charger is underpowered imo. It gets REALLY hot with anything under 80%. This is why Apple used to package a 18W with those.
For your situation - I'd use process of elimination. Try a higher wattage/different charger with the same cable - does it do same thing? Try a different cable with same charging brick - does it do same thing? Try same charger with a different cable - does it behave differently? --- That's probably what I'd do.
I've had Apple cables fail in the past (usually the ones in my car that get used a lot by my passengers) - they just stop charging cuz of so much use. That's why I usually get Anker braided cables - they tend to last a lot longer.