My Phantom 4 RC does'nt work with my iPhone 8 Plus.
When I connect the RC to the iPhone 8 plus, the phone said "Accessory Not Supported"; "This accesory is not supported by this device".
I've try with an iPhone 7 plus, iPad Mini and they said the same.
What can I do to fly my Phantom 4 please???

Any of those should work.  Are you using the GO4 app?

Hello and good day leminhrc. I am sorry to know that you are having this issue on the mobile devices that you are using for your DJI Phantom 4. Can you please try to uninstall and reinstall the DJI GO 4 application for those devices to check if the issue will still persist. Please give us an update on the said issue for us to help you further. Thank you.

DJI Stephen Posted at 3-18 13:56
Hello and good day leminhrc. I am sorry to know that you are having this issue on the mobile devices that you are using for your DJI Phantom 4. Can you please try to uninstall and reinstall the DJI GO 4 application for those devices to check if the issue will still persist. Please give us an update on the said issue for us to help you further. Thank you.

Hi,
I think it does not have any problem with the DJI GO 4. The mentioned massege appear right after I plug the cable into the iPhone to connect with the RC while the DJI GO 4 has not been turned on.

ALABAMA Posted at 3-18 13:18
Any of those should work.  Are you using the GO4 app?

I used the DJI GO 4 app for a long time.
My last flight was in January 2019 with the same iPad, iPhone, cable.
I've tried to changed many cables, use other iPhones 7 plus, 8 plus and X but it still not working.
Same message and the RC and Phantom 4 can't connect with the app.

Does your iPhone have the lastest operating system?  Lose all other apps before opening the app?

DeepFriedOprah Posted at 3-18 18:34
Does your iPhone have the lastest operating system?  Lose all other apps before opening the app?

HI,
My phone has the latest iOS (Ver. 12.1.4)

Try opening the app before connecting the cable

DeepFriedOprah Posted at 3-18 19:26
Try opening the app before connecting the cable

I've just restarted my phone, plugged the cable into both RC and my phone, the message appeared the same.

DeepFriedOprah Posted at 3-18 19:26
Try opening the app before connecting the cable

I've just restarted my phone, plugged the cable into both RC and my phone, the message appeared the same.

Is the cable a certified apple cable?

DJI Stephen Posted at 3-18 13:56
Hello and good day leminhrc. I am sorry to know that you are having this issue on the mobile devices that you are using for your DJI Phantom 4. Can you please try to uninstall and reinstall the DJI GO 4 application for those devices to check if the issue will still persist. Please give us an update on the said issue for us to help you further. Thank you.

I have the same problem

DeepFriedOprah Posted at 3-18 20:23
Is the cable a certified apple cable?

Sure. All of the cables that I've tried are from Apple.