How to fix this accessory may not be supported

There is no solution. Apple has designed their product in such a way that of you have buy an apple you have to buy whole family. That’s why Apple is worlds biggest company

It isn’t just iPhone 7. I have iPhone 6S. I Never had this problem until 7/4/2018 using same headphone and non-Apple charging corded and plugs. It started after last IOS update. I tried the suggested fix and it worked for several hours and then came back. I will contact APPLE direct. Still love my iPhone. Android isn’t as good at least compared to my 6S. I never upgrade to newest until this t’s been out for at least 2 years and I get a chance to hear about issues.

You just need a new/good condition charger. Sometimes it’s just the wire or the pins. It could be also the pins of your iphone if there’s a lot of dust in there.

Thank you! I wasn’t even able to enter my log-in code because the “Dismiss” button wouldn’t work regardless of WHAT I did. Turning off the phone was impossible...Your reboot worked beautifully!!!

OMG, this helped me!!!!!!!! I was legit crying that I wouldn't get to use my phone until I went to the phone store!! And I can't sleep without music so...

Thank you so much! It helped me, God bless you!

The same thing is happening to my iPhone 7 Plus. Did you go to Apple yet? Because I just got the iPhone today and when I set it up everything was good it charged correctly but each time I try to plug in the headphones adapter and then listen to music it will pause after a minute and so. Then I press play while the headphone still plug in it plays it out loud through the speaker.

This is my problem too.Personally without headphones I can barely use my phone it helps me so much and is annoying when it stops midway to say that it isnt compatible when it literally was just working fine like wtf.

Any update on this, I have the same problem on iPhone7 when I use headphone adapter and listed to the music. The headphone works fine if I use headphone, but when I use adapter to connect the headphone I can't listed music thru headphone. This working fine well before but issue started a few days before

Been using the same aftermarket cord for 6+ months and all of a sudden the error message popped up. I have the 8+ and it has been nothing but problem after problem & now this. I’ve been on the Apple bandwagon since the iPhone 4 & after “downgrading” from the 7+ to the 8+ I’m finished. I will end my contract early and pay the penalty, I don’t care. I have always thought that having to buy a genuine Apple charging cord was absolutely ridiculous but this cord I bought 6+ months ago worked up until now. Goodby Apple, I would apologize but you don’t deserve it after raping people for so long. This weekend, I’ll be upgrading ALL of all our Apple products to a different manufacturer. Time to do some research!!

I damaged my original Apple USB to Lightning cable. It still works, but the white plastic got damaged and the shielding got exposed. So I bought some claimed compatible cables. I took them to the Apple store to get them "blessed" by a Genius. She plugged them into an Apple computer and plugged my phone into the cables. The Genius told me that the cables work perfectly for charging and data.

But today, I am getting the dreaded "This accessory may.." message. I switched back to the still working original Apple cable, and it too, reported that it might not be supported message! I found, that the iPhone connection seems to be sensitive to what USB port on my computer it is using. If I use a port that works for the Apple cable, it works for the third party cables too.

Apple is just TOO GREEDY. Why can't I buy what I want/need? I bought some cables that are fabric on the outside that look and feel better than the cheap cables from Apple.

Now, I have my iPhone charging and exchanging data with iTunes.

I tried all of these but none worked. Except for the using the cable that came with the phone. You can apparently plug that cable into any attachment to plug into the wall but apparently non-apple cords will have this issue. At least mine did.

What if you are using the original cable but just plugging it directly in to your work computer to charge (a PC)? The issue for me is not the cable but the device it is plugged in to. My car charger has started doing the same thing since the update but I use the original apple cord it is just the product the plug is plugged into that isn't apple.

Try regular cord, sound S loke apple cord is ripoff

@Hazel, this option worked for me. Thanks a million!!

Driving we plugged in two iPhone 7+s , one with apple cord one with aftermarket cord to a new aftermarket accessory to charge in the cigarette lighter/ adapter socket. One phone charger no matter which cord was used and the other iPhone kept getting the “ thus accessory may not be compatible messsge” and stop charging. I tried turning it off and restarting but it still wouldn’t charge fir longer than a few seconds and sometimes a few minutes but very slowly . Very frustrating when travelling.

Sounds like another class action lawsuit against Apple is needed. Stop disabling/supporting/slowing down Apple and related products. It’s a shame Apple lost its vision and is now more of a monopoly than Microsoft. We miss you Steve Jobs!!!

I don't have apple phone,sonds like it don't matter the brand. All about the money

Try another brand

Sounds like good advise