iPhone 15 keeps coming on and off charge

I have this same issue, used the cable that I got from the box, and I used it with the adapter that I already had (this adapter works fine on my other devices) every time I want to charge my iPhone 15, it comes on and off charger every time it goes up by 1% and it keeps making that sound as if I just put it on the charger. It's a brand new phone and cable and it's driving me nuts. Does anyone have a solution for this?

Also my iPhone 15 keeps charging on and off all the time why it’s like that

The problem is the battery optimized feature. Sometimes it allows too much current upwards of 3.4amps to get into the phone, that’s about 30w at 9v. So the built in protection trips off the charging when the wattage drawn becomes to high. I witness this with chargers that are able to give as much power as possible. If you have a charger less than 25w and not more you’ll be fine. The charging software can draw upwards of 30 watt,and with the nature of flexible current draw most of these power bricks have no control on max current draw. So when you plug in your phone. Its starts with a low current draw and for fast charging increases till it reaches 30 watts. That triggers the iPhone battery protection software to power cycle again. I thinks it’s a flaw in the software because it should have a fixed current draw for fast charging but it doesn’t. Even with the optimized battery feature. And if you turn it off you don’t get fast charging.

what I’ve learnt recently is to toggle off the optimized feature to none for a while and then back and you won’t have it again.

Same with mine!! This is my first time charging it since I JUST purchased it and it’s so annoying! I thought maybe it was something in the settings but I’ve tried all the things mentioned here and none of them work. Apple needs to fix this asap!

I am having the same issue on two brand new iphone 15 pro max. I tried different cables, a brand new 20W adapter. Updated to latest software, nothing works. The only way to avoid the continuous charging notification was by charging it from my laptops usb C port. It is really disappointing.

Mine too, 15 pro, brand new, regardless of which cable I use. It keeps the charge but cycles on and off with each percent gain.

My phone is doing the same thing whether on optimization or 100% charging with various cables and diffferent plugs. It was checked out at the Apple Store genius bar and they told me this was not a problem that Apple informed them bout. Also, they didn’t fix the problem.

Do you have charging optimization on in settings? If it’s set to 80% limit and your phone is close to 80% when you plug it up that may be the issue. Same may be true if you selected the Optimized Battery Charging option. Switch it to None and see if the same thing occurs. If it does then definitely take the phone to your nearest Apple Store to be evaluated (or call Apple for assistance if you don’t have a store in your area). You are still in the exchange period so you could also just opt to exchange it.

And it’s not saying you posted from your 12. That’s just the device you have on your profile.

Iphone 15 promax here, I've fixed it by setting the do not disturb mode because charge use to tilt on and off between notifications, not sure if this is a software related issue but setting do not disturb mode worked.

I just got my 15 plus and have been using the 20w adapter and the cable that comes in the box with the phone and I still have this issue. I tried turning off charging optimization and it’s still happening. It charges normally on my wireless charging pad as well as when plugged into the usb in my car, I’m only having the issue with the charger provided by apple in the box. Hopefully they can make a fix for this I’ve never had this kind of problem before

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!

Had the same problem here.

Bought an iPhone 15 Pro two days ago and yesterday I noticed the same issue (charging going on and off).

As someone told here, turns out that switching the Optimized Charging on and off handled the problem.

Apple want us to buy new adapters as when we connect old adapters iPhone AI Comes to know so it does this on and off game even if u use difrent company charger it will do on and off but not frequently to show something is wrong

just buy a new adapter all is fine