"this accessory may not be supported" iOs 7.0.3

I VE had same problem with iphone 4 since 7.1.2 tried reset deleted apps nothing even ordered new battery and charging port but didn't need to as I have got it working before taking it apart here's how-

unplugged iad charger that that I had been using its a 2.1 amp genuine apple and tried 1amp charger again genuine apple still not working but when I unplug from short extension cable that has four outlets and plug straight into wall outlett it works with no warnings ????? Now all I have to do is use same setup and never leave my house if I want to stay in control of charging great

I had this problem with my (second-hand) ipad mini. the cable it came with didn't work but i bought an "IWantIt" charger and it's working fine now 🙂

Same here, use the Ipad only for my kids but we use Samsung Grand 2. Much more and better option and not dependent on monopoly of one company for accessories.

Hey everyone,

Try THIS if you have an iMac and powered USB port. Normally, I plug in my iPad to my iMac. One day, while cleaning, I disconnected the cables to both, and when I plugged everything back in, I plugged in the iPad to the powered USB port. Wasn't working. The "May Not Be Supported By This Device" window appeared on the iPad. Just out of curiosity, I unplugged the USB cable from the powered USB port and plugged it into the iMac.

Problem solved.

Hope this helps some of you.

This is a power level issue. I first saw this message when I connected my iPhone 3G to my Bose docking station back in 2009. The docking station connection was not equipped to charge the iPhone. More recently I see it when connected to my Hyundai Santa Fe but the message only appears when the device is fully charged. It appears once the device tells the car that it is fully charged, the car stops feeding power to the device. That triggers the software on the phone to detect insufficient power coming in the connector causing the message to appear.

That said, this message *****. It reminds me of some of the Microsoft error messages - technically accurate but not very informative.

Thanks so much!🙂 That helped me. Guys, all you need to do is clean the charger where it connects to the iPad. Just use a toothbrush and scrub. I scrubbed the port Just in case

Having similar problem except on my iPad mini 4 using the Lightning to 30 pin adapter on my Vestax SPIN2 DJ controller.

Same is happening to me