Does iPhone Have Fast Charging?
If youve purchased a new iPhone since 2017, the odds are that it supports fast charging.
Some iPhones have fast charging, but only certain models.

How Do I Know If My Charger Is Fast Charging?
when you’ve got the right equipment, your iPhone should fast charge without issue.
We’ll use Ampere in the screenshots below.
How Do I Know If My iPhone 12 Is Fast Charging?
You may be able to save some money on a charger if you already own a MacBook.
How Do I Know If My iPhone Is Fast Charging on iOS 14?
you might’t because iOS 14 provides no real indication an iPhone is fast charging.
In addition, its unclear if or when Apple will provide iPhone users with fast charging notifications.
But there is a way you could test out whether your iPhone is fast charging on iOS 14.
Drain your iPhone’s battery to 0%.
Plug your iPhone into a compatible charger with a USB-C to Lightning cable.
Apple claims it takes around 30 minutes to go from 0% to 50% battery with fast charge.
FAQ
Standard chargers carry 1 amp of current and put out 5 watts of power.
Rapid chargers support 2 amps and 12 watts or more.
You need a 20W or higher power adapter to fast charge an iPhone 12.
There are severalcauses of an iPhone battery draining fast.
If you power off the iPhone, it can charge quickly without draining the battery.
you might fast charge an iPhone 8 and later up to 50% battery in around 30 minutes.
However, it can take up to 3 1/2 hours to charge an iPhone to 100%.