You can use a pushpin to carefully insert it into your iphone or ipad charging port. Look for debris on the meshes in each earbud.

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Iphone headphone adapter not supported. Then when the error message appears just dismiss it and turn the airplane mode on. Make sure that you are using the right adapter with the standard amount of power for your device. Update your iphone to the latest ios. The accessory isnt supported by your device. Your adapter may not be providing enough power. After that you need to turn off the device by pressing the sleep and wake button together.
Check your headphone cable connector remote and earbuds for damage like wear or breakage. Check for debris in the headphone port on your iphone ipad or ipod touch. Fix this accessory may not be supported problem on iphoneipad. There are several reasons why you might see this alert or similar alerts on your iphone ipad or ipod touch. Not every cable is created equally since different cables can support different voltages and this may be a major cause of your issue on your iphone or ipad. Heres when these alerts might appear.
But today i am getting the dreaded this accessory may message. For that first of all you are required to connect your device to the charger and power adapter to the source. 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 you see an accessory may not be supported alert. If you see an alert learn what to do.
Then check the power supply also if you are using the usb port on your computer it may not be supplying adequate power to charge your iphone or ipad. Clean your apple accessory. If the message this accessory is not supported by this iphone or ipadipod happens when connecting to a bluetooth accessory like speakers or headphones try forgetting the device and then adding it back while renaming that device something different than before if possible. Your accessory is defective damaged or not apple certified. Your ios device has a dirty or damaged connector. Try the other original accessory charging cable or charger for your iphone ipad.
To remove debris gently brush all openings with a small soft bristled brush thats clean and dry. If the cable is providing too little or too much voltage ios may be trying to preserve the phone from damage by blocking the device through your software.