iPhone 15 keeps coming on and off charge

For those still searching and trying to understand the issue it has to do with the type of cable and Power Delivery (PD). For those of us using genuine Apple Cable and Adapter this shouldn’t be an issue. 20W Adapter to be specific.

Where I notice the issue the most is when I’m using an Anker Power 240W Multi Charger (20W Port) and an Anker cable I get the on/off charging. I suspect that as it ramps up the charge it looses capacity and resets. This does not occur with an Apple Cable plugged in the same way.

Just to prove it was the cable, with that specific charger I used a 140W Apple Charger and the Anker USB-C Cable and it worked.

Which means that some cables and chargers don’t have the same power that others do. You might need to get a cable rated for 20W.

Not all Apple USB-C plugs are created equal. Make sure you are using the 20 watt output version. The output will be printed in VERY SMALL type on the plug side of the adapter. I too had this issue because the older Apple USB-C adapters had a 5 watt output.

Update,

For some reason with another brand new 20w power adapter it doesn't behave like this. No more repeating notifications. I already tried before a new adapter exactly the same as this. Only difference between them is that one is from an Apple Premium Reseller (charger with the paper foil on it). The other one is from another electronics shop. Don’t get me wrong, both are supposed to be produced by apple. Same identical box, same inscriptions. I don’t know what’s causing this.

it doesn’t make any sense.

After charging it once with the new adapter, the old adapter was also working fine.

I suspect there is some kind of machine learning/NLP trying to learn and adapt the charging power that fails sometimes and results into these power interruptions and charging notifications.

Try a few other new chargers until

it works and blame apple.



9/10 it’s a software glitch. Sometimes when “Charging optimization”, under Settings > Battery > Charging optimization, is turned OFF it charges normally, but sometimes it doesn’t, thus going on/off/on charge. I believe we gotta wait a patch or iOS 18. I personally have it capped at 80% limit, but going on and off charge can damage the battery in the long run. Hope it helps.

I'm experiencing the same exact issue on my iPhone 15 Pro. I use:

1. Original 20W Apple Charger.
2. Original out of the box USB-C cable

The phone is brand new , 3 weeks old. It worked fine the first 3 weeks , no issues at all but the previous night the issues started. I didn't do any updates or anything out of ordinary with the phone. It happened with iOS 17.4 and i updated to 17.5.1 (latest) and the issue persist.

• The "affected" charger works with other iPhones and Apple Watch so the charger cannot be faulty.
• Using "affected" charger with wireless charging dock works with iPhone 15 Pro.
• Using different original 20W charger and same cable works with iPhone 15 Pro.
• Using Macbook original 30W charger and same cable works with iPhone 15 Pro.

The only solution is to buy a new charger but I don't want to do it. I already bought the charger. Also who guarantees that the same issue won't happen again with new charger?

Apple can you please look into the issue? There are many reports on this so it seems something must be going on. Thanks!

I got mine working, Instead of using the charger the phone came with I used a charger ending with a USB instead of a Type C.

After 3 months, did you solve the issue? What did you do? Thanks!

Here is a video from this morning, I kept hearing the vibration of the charging stopping and starting. This happens all night long. Not on a cable connection, changed the power adapter, MagSafe charger, took off the case, no matter what I do, this happens all night long.https://youtu.be/-x1bKKD_5S4

Same thing happening on my iPhone 15 plus. Ever since the first day I bought it, took it out the box and charged it the charging notification keeps going on and off. I even took it back to the store I bought it from, but at the store it charged just fine. I have tried charging it at all charging points in my home. Please fix this!

Hello , i was having the same issue with my 15 pro max , i was charging it with apple 20 w adapter and original cable but than i shifted to samsung 25 w adpater and it is a life saver , the issue is gone .

Mine has been doing this and it’s driving me mad! It happens on every iPhone I get (I get the latest every year) around the same time. Be sure to check your charging port is not clogged up with pocket dust as this will stop the charger sitting in flush within the port (you will be surprised how much gets clogged up in there)

im not a fan of USB-C and never was! It’s even more susceptible to clogging up with pocket dust due to the usb C ‘nib’ that sticks out within the port

I think alot of it is due to weak cables and poor charging ports (pretty evident as you have to wiggle and position the cable at a specific angle to get it charging again)

This was happening to me but I was using an off brand plug adapter with a usb and usb-c dual port. I had cables plugged into both, and the iPhone to the usb-c kept disconnecting and reconnecting to the charge. I finally removed the other cable (the usb) and the usb-c cable charge for my iPhone worked fine! It was an issue with sharing power perhaps.

I’m guessing my new anklet adapter (47w) is defective?

Today, I had problem with PD 25W charger (no issue before). I switched to PD 20W charger, the problem is gone.

Thanks,