iPhone 15 keeps coming on and off charge

I am having this same problem with apple adapter 20w. I tried other cables and adapters and it worked fine. Then i changed charging optimisation to none and back to optimised and now it’s working fine. I guess we have this issue when the battery is below 20%.

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.

My new iPhone 15 pro max keeps having interrupted charging. I am using the cable that comes with it in the box. I’ve asking used different cables and adapters but still the same. It keeps charging on and off until it passes 75% then will normalize.

I’ve cleaned all charging ports and it still does the same.

Can anyone help please? Is something wrong with my phone?

iphones are a trash. I will never ever buy these phones again. Spent hundreds of dollars and there is no peace of mind. Androids are better. Same thing happens to me. My iphone keeps disconnecting from charge. What a joke

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.



Honestly, why can't somebody, Apple? sort this out ????

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

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 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.

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.

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

I turned off optimization but still doing it

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)

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.

This started mine one night when charging my 15 pro max. It was connected to a third party charger that had both a usb c and a usb a plug. It has something to do with sharing the power between both ports. I disconnected the item that was charging with the usb a port and the issue stopped.