iPhone 12 Pro charging slowly with Magsafe charger

Is it still slow ?? mine is charging but very slow. 17% in 75 minutes

any updates ?

Yes, there are updates, and to see them just read the thread you posted to.

I am having a very similar issue with my iPhone 12 pro as well. It won't charge fast with either a magsafe or wired charger

I am using the 20w USB-C Apple Power Adapter as well as the Anker Nano 20w USB-C power adapter. Both deliver bad results that get too hot

Also if I am on face time the app slows down then crashes after 25-30 minutes. The phone totally overheats

I have the same issue with my iPhone 12 Pro Max but My iPhone charges a little more faster and it gets warm

I purchased the IPhone 12 mini and a mophie 3 in 1 wireless charging stand. After charging the phone all night it only reached 84% of the battery capacity. I contacted Apple support and I was told that I need To wait 24 hours to get the battery charge at 100% as the phone it, learning all the apps and it’s battery lifetime. If the issues continues after 24 hours to call back.

Hello, Ropen,

Have you tried charging the phone without the case on? If it is super hot I would take it off of the charger as soon as you can (heat can damage the battery and internal circuitry)

Try contacting apple about this one, I don't know enough about the iPhone 12 to really help here. You can contact them by scrolling up on this page to the top right corner where it says "Contact Support".

Have a good day,

CJM

Thanks for the reply. I contacted support and got the same response and troubleshooting. I’m debating returning MagSafe at this point, especially if it’s going to take me 2.5 hours to charge from 81% to 99%, which it did overnight on my end.

I’m curious to see if Apple will address this or any articles will be written regarding the issue.

Hello, Ropen,

It seems like the problem is that the magsafe wireless charging is interfering with how much wattage is actually being transferred to the iPhone. I would switch to a normal cord for your iPhone which would charge it much faster:

To charge your new iPhone, you can continue to use your USB‑A to Lightning cable. Or you can take advantage of fast charging with the USB‑C to Lightning cable now included in the box, which works with existing USB‑C power adapters and computer ports.

This was information from the Apple website you can view it here:

https://www.apple.com/iphone-12/

Have a good day,

CJM

Apple says the magsafe charger is supposed to charge at 15W

The MagSafe Charger makes wireless charging a snap. The

perfectly aligned magnets attach to your iPhone 12 or iPhone 12 Pro and

provide faster wireless charging up to 15W.

The MagSafe is 15 watts, so it will charge twice as fast as a 7.5 watt Qi charger to 80%. From 80% to 100% there is no fast charge capability; the phone slows the charge rate above 80% (actually, it starts slowing at 75%) to prevent overcharging.

However, there appears to be a bad batch of MagSafe chargers (or possibly 20 watt USB-C power sources) in the pipeline. Contact Apple Support to arrange to get it replaced—>Get Support

Except I saw an article that the Mag-Safe uses a new 15watt PD Profile and currently only the genuine Apple 18 or 20 watt charger supports it.

https://appleinsider.com/articles/20/10/27/magsafe-15w-fast-charging-restricted-to-apple-20w-adapter

Device: iPhone 12 Pro, 256 GB, Pacific Blue

iOS 4.1

Alright so... I received my iPhone 12 Pro and after initial setup realized I was having the same issue. During setup while apps were being downloaded I even noticed that while MagSafe charger (Using new 20W Brick) was attached to device, it said it was charging but noticed it wasn’t actually charging. The percentage was going down... I also noticed after trying a number of things that after I hard reset the device, the percentage shoots up as if it actually was charging all along... but then goes back to being buggy again. During this time I also noticed that while the MagSafe was attached, the iPhone 12 Pro was getting VERY HOT. 🥵 I’ve tried everything multiple times, from backing up and resetting and erasing device, to hard resetting multiple times, to setting up as new device...

After fiddling with the device and reading multiple forums on the issue, I came across another interesting bug... which leads me to believe it’s actually a software issue and not a hardware issue. If you go to the ‘Measure’ App, the Lidar scanner is supposed to automatically be used to indicate how tall someone is... but it wasn’t working. It either kept saying move closer or move further away. So I found a solution to that problem on another forum... and it seems that this solution also solved the wireless charging issue as well. It’s simple actually.

The ONLY solution that I found was the following (No need to setup as new phone):

Go to: Settings>General>Reset>Reset All Settings. (No need to erase your phone.)

This seems to have solved the issue. I would also try charging and discharging the battery once or twice with a lightning cable first. This seems to have resolved the wireless charging problem we’re all experiencing. Hopefully this helps. I still made an appointment with Apple so I’ll update to see what they say.

Good luck everyone.

Also - MagSafe Charging may not be as fast as you expected. Checkout this article:

https://www.phonearena.com/news/apple-iphone-12-pro-magsafe-vs-20w-vs-18w-vs-5w-charging-speeds_id128110