Anyone else having “This accessory is not optimized for this iPhone” message pop up repeatedly, when nothing is connected??? This often occurs even if you’ve never plugged an accessory into your device and bluetooth is also off!
Some users have reported an issue in which the iPhone displays the message “This accessory is not optimized for this iPhone…” despite the fact that no accessory is connected to the phone.
Readers also receive another similar error message, “This accessory may not be supported.” Sometimes this error message appears for an accessory that’s worked in the past, even for months or years.
“This accessory is not optimized for this iPhone” Fix
In many cases, this issue is caused by debris in the iPhone’s dock connector. As such, you can try cleaning the dock connecter using a soft toothbrush or a dry cotton swab. Try blowing into the two speakers at the iDevice’s bottom. Apparently, the speakers are the issue as sometimes they take in moisture.
“This Cable is Not Certified and May Not Work Reliably” Error on iPhone & iPad
On rare occasions when you plug an iPhone or iPad into your USB Lightning cable, you encounter a pop-up or message that says “This cable is not certified and may not work reliably”. The result is that your iDevice will not charge via that lightning cable.
If this happens to you, first try unplugging the cable from both ends and then plugging in again. Also, try plugging the cable into a different USB port or a different power outlet.
Make sure your cable is Apple certified, many third party lightning cables are not. Check if your cable is torn or frayed at any point. If so, replace it with an Apple certified lightning cable.
Finally, check both your iDevice lightning port and the cable inputs on the charger for any dirt, lint, or other debris stuck inside it. If you see anything, remove it. Using a magnifying glass helps.