No accessory = "This accessory is not optimized for this iPhone..."

The red dot will be obvious if it is there. I don't work for Apple; this is a user forum, and Apple doesn't respond in it. If you can, take the phone to an Apple store for further diagnosis. Cleaning the connector usually fixes it. As a last resort you can try restoring the phone as New with iTunes. If the problem goes away it may be corrupt firmware. Unlikely, but possible.

ahhh lawrence.... your a g.... thanks for the help..... I persuaded my friend from apple to come over so I will interrogate about the problem. Any light on the matter I shall share. Keep up the good work g

Resently I got same message on my iphone 4

I own 3 phones: iphone 4, Iphone4s, and iphone 3g

So i have headphones and chargers from all this versions

Once i've read all the comments i've plug my iphone 4 to it's original data cable and also to it's original headphones and problem seems to be gone..

maybe in my case it had something to do with 4s data cable/charger/headphones was not compatible with iphone4.

who knows.. anyway it works now, thanks guys.

IF YOUR HAVING THIS PROBLEM READ THIS!!!!!!

I bought these screen protectors online for like $0.86 and the next day while I was fishing on my homies bass boat my music cut out and there was that message. I read all these posts and this is how to fix it:

Remove your protectors (screen/back proctectors)

Reboot your phone

If the problem hasnt fixed itself .....

go to settings

turn off wifi

in settings go to general

go to network

turn off 3g and data roaming

Turn off your phone (do not reboot)

Plug your phone in Using an apple USB connector to reboot

If it still wont let you play your music or other other apps with sound and is giving you that same message: You need to repeat all these steps and use your computer to turn your phone on in the last step (by disconnecting the usb end from the charger and plugging it into the usb import on your laptop or computer while your phone is off and the computer is turned on), instead of a wall or car charger.

Hopefully you find this first and save yourself a lot of time

Hi,

I've been having the same problem..., device not supported, etc, etc, etc. I tried all the solutions to no avail and then I noticed there was a small nick (exposed wires) in the charging cable (from being bent in my bag, etc) so I thought I'd try my portable (retractable) cable and low and behold it worked...SOOO HAPPY!!!

After trying many different things I found this site. 1GFUNK, thank you very much, your steps worked for me!!

Dude,

Thanks a lot. it worked for me. I have no time to visit apple store. just a tooth brush solved fix the issue!!

I had the same issue the message kept popping up randomly. I have only ever plugged my iPhone into my apple charger, I looked in the port where you would normally plug in the charger with a torch and noticed a lot of dust and paper, so I used a soft dry toothbrush to clean out all the dust and voila! No more message and the sound (ringer buttons) work on my iPhone 4. Try this first !! Hope it helps

ive just come across a simple solution that may work for others who have this problem occuring. (after attempting cleaning, restoring, hard resetting, and updating (to v5.0.1) failed to relieve the issue) (this worked for my iphone 4 by the way......)

When trying to figure out what was causing the popup / external speaker disablement, i noticed that when my iphone was connected to the dock connector cable, everything would work fine (no popup or speaker disablement). The odd thing however was that the dock connector didnt need to be connected to anything else on the usb end of things. Even though the iphone wasnt technically plugged into an accessory (as no signal would have been going through the cable, seeing as the usb end was not plugged into anything), my phone must have thought that it was, hence the error did not arise again whilst connected.

Rather than walking around with a cord constantly attached to the iphone dock port, i instead bought a case which included dock and headphone jack protectors. (little pieces of plastic / rubber that would prevent dust gettign into the docks).

Inserting this protector into the dock resulted in the same effect as if id plugged in the dock cable itself.

The best way i tested to see if this worked, was to open the ipod music player and play a song. When the rubber dock protector was inserted in the phone, all functionality was normal. After about 5-10 seconds (this consistenltly occured) of removing the rubber dock protector, the volume control bar would disappear in the music player, and external speakers were once again disabled. Upon reinserting the dock protector, everything reappeared and all functionality resumed correctly.

This may be a simple solution for those who currently have had no luck. I have only had my iphone for 4 months, and it has not been victim to water damage.

The brand of the iphone 4 case was SwitchEasy, and cost about $40.

I had this exact same problem- hard sets and reboots didn't work. I could hardly even use my phone with the pop-up popping up about every 5 seconds. It also drained my battery because my phone couldn't turn off and was constantly being lit up with the message. I wasn't about to take my phone apart *i'm no tech genius* but i did try cleaning my port with alchohol and that did absolutly nothing.

I updated my phone to the new hardware on itunes- and the pop-up has miraculously dissipated. I have a 3GS. I hope that my phone continues to be ok. But so far- no more pop-ups

I kept getting this message when I tried to charge my iphone 3gs. It became increasingly more frequent over the course of a few days. I've been charging with the usb cable cord only. I finally went and bought a new charging cable and the message went away. My old cable cord was frayed at the ends where the connector met the wire and it was about three years old. It seems it finally broke down and there wasn't enough charge going through the cord to charge the phone so it kept giving me that message. I'm glad the new cord is working great with the phone and everything's back to normal.

Hi,

I have the same problem but i find that if I blow into the two speakers at the bottom the sound seems to turn on again. Someone has told me that the speakers are the issue as sometimes they take in moisture.

Glad it works, but note that there is only one speaker at the bottom of the phone. The other grille is the microphone.

do upgraded your os??if not...then you're in a different world

Colleague came to me with this problem.

Had this myself a year or 2 back - forgot how I fixed it

Found this thread and remembered - It was nothing more complicated than a build-up of fluff in the connector port.

Cleaned out a fair pile of crud with a folded piece of paper and a toothpick.

Problem solved.