Bug? "This accessory may not be supported"

Kerber0s34

macrumors member
Original poster
Jan 26, 2008
63
13
Kelowna, BC
I have an iPad Mini 2 and an iPhone 7 both on the public beta. I use the Apple iPad 12W charger and Apple lightning cable (the one that came with with iPhone) for both, but on the iPad it comes up with "This accessory may not be supported". The same charger / cable combination has no problem with any of the other iOS devices (still on 10.3) in the house.

I've tried various restart methods to cure the issue for 10.3 devices but to no avail.
 

Kerber0s34

macrumors member
Original poster
Jan 26, 2008
63
13
Kelowna, BC
Interesting, thought I had tried that. It only affects certain devices? Because my iPhone has no problem with the cable already plugged in.
 

Floris

macrumors 68020
Sep 7, 2007
2,381
1,451
Netherlands
iPhone 6s+ not affected on the same chargers and lightning cables.

iPad Air 2 just started doing this. I can't charge it on the new 2017 iMac, or a wall charger, all my accessories are official apple.com purchased stuff.

I just googled and saw loads of sites reporting this now on iPad Air 2, and public beta 2. Some say dev beta 2 as well. I indeed run ios11 public beta 2
 

Mlrollin91

macrumors G5
Nov 20, 2008
13,477
8,687
Ventura County
iPhone 6s+ not affected on the same chargers and lightning cables.

iPad Air 2 just started doing this. I can't charge it on the new 2017 iMac, or a wall charger, all my accessories are official apple.com purchased stuff.

I just googled and saw loads of sites reporting this now on iPad Air 2, and public beta 2. Some say dev beta 2 as well. I indeed run ios11 public beta 2
Try the workaround I mentioned above.
 

TomH TX

macrumors regular
Oct 18, 2010
231
72
My ipadpro9.7 does not have this problem, but my iPad air1 did after the updates to 11b2i and 11b2j. Fortunately, I tried plugging the iPad into a wall socket, and it worked, and has worked correctly each time since. Very strange.
 

Floris

macrumors 68020
Sep 7, 2007
2,381
1,451
Netherlands
Try the workaround I mentioned above.
I did, i charged it to 40%, watched en episode of Seinfeld and fall asleep, woke up just now to a dead iPad.

Anyway, the lightning cable, i put it in the iPad while the thing was in the socket charger. 12w from Apple.
I got the msg, I dismiss it, I unplug the charger from the wall and plug it back in and it charges the iPad.

Glad we have a workaround :)
 

jbindy1

macrumors member
Jul 1, 2015
72
31
Indianapolis, IN
Its a bug in beta 2. Just started for me and many others in the larger bug thread. @gwhizkids found a workaround. Plug the cable into your device, then the cable into the wall or computer, it will work. But if its already plugged in the wall then you plug it into your device, you get the error.
I have turned the cable around and it seems to take on my iPad
 

CTHarrryH

macrumors 68020
Jul 4, 2012
2,053
746
I've occasionally have that problem and found turning cable end around seems to make it work. I've also found dust in the port causes this occasionally
 

naasrd

macrumors 6502
Apr 30, 2008
431
127
Dublin, Ireland
Scared the hell outa me, my iPad was actually draining while plugged in and I was dreading it running out of juice and never being able to charge it again. What works for me is pulling the usb out of the plug and pushing it back in.
 

kmichalec

macrumors 6502a
Aug 14, 2010
797
197
Other option is to turn off the ipad while it's charging. The software bug that is causing the issue doesn't affect it when the device is off. At least that's a fix for overnight charging, as I've myself plugged in my Air 2 at night with 20% left, and woken up to find it's at 3% left, cause I didn't notice the charge plug didn't take (I wasn't getting the incompatible device error message, just would ding, and then the charge icon would disappear). Turning it off at night seemed to do the trick for now. Will try it with the latest Beta 2 Update 1 release, which I just installed on my iPad.
 

srred

macrumors newbie
Apr 23, 2015
7
1
I stumbled on the fix - plug in to iPad before the socket and it seemed to be charging again. I was worried I was about to end up with a dead Air 2.

Good to hear it’s a common bug and hopefully fixed in the next beta.
 
  • Like
Reactions: gwhizkids

Peepo

macrumors 6502a
Jun 18, 2009
946
372
IPad mini 4 has this problem. Figured out the workaround by plugging in first to iPad.
 

DeltaMac

macrumors G3
Jul 30, 2003
9,535
2,303
Delaware
I have the same accessory error on an iPhone 5s - so not only iPads.
Thought it was the old generic charger that I have used on different devices for years, but the original Apple stuff does the same.
Always works if I plug in the iPhone first, then the other end of whatever I am using for charging.
Annoying (just a little), and I hope it gets fixed in a coming beta.
 
  • Like
Reactions: uhaas

uhaas

macrumors 6502
Aug 31, 2012
266
56
Boston, MA
I have the same accessory error on an iPhone 5s - so not only iPads.
Thought it was the old generic charger that I have used on different devices for years, but the original Apple stuff does the same.
Always works if I plug in the iPhone first, then the other end of whatever I am using for charging.
Annoying (just a little), and I hope it gets fixed in a coming beta.
Me too, and I'm pretty sure B2update1 doesn't fix the 5S
 

Stenar

macrumors member
Jun 29, 2007
33
8
I’m having the same issue.
[doublepost=1499237643][/doublepost]
Always works if I plug in the iPhone first, then the other end of whatever I am using for charging.
That worked for me for a few days, but no longer works for me.
 

Stenar

macrumors member
Jun 29, 2007
33
8
Its a bug in beta 2. Just started for me and many others in the larger bug thread. @gwhizkids found a workaround. Plug the cable into your device, then the cable into the wall or computer, it will work. But if its already plugged in the wall then you plug it into your device, you get the error.
That worked for me for a few days, but it no longer works for me.
[doublepost=1499243627][/doublepost]
I've only seen it affecting iPads. Mainly Air 2s from what I have seen around here.
It's affecting my Air 2 and my iPhone 6.
[doublepost=1499243785][/doublepost]
Other option is to turn off the ipad while it's charging. The software bug that is causing the issue doesn't affect it when the device is off. At least that's a fix for overnight charging, as I've myself plugged in my Air 2 at night with 20% left, and woken up to find it's at 3% left, cause I didn't notice the charge plug didn't take (I wasn't getting the incompatible device error message, just would ding, and then the charge icon would disappear). Turning it off at night seemed to do the trick for now. Will try it with the latest Beta 2 Update 1 release, which I just installed on my iPad.
I tried charging while it was turned off, but that didn't work for me.

I tried using both OEM and MFI charging cables.
 
Last edited:

kmichalec

macrumors 6502a
Aug 14, 2010
797
197
I tried charging while it was turned off, but that didn't work for me.

I tried using both OEM and MFI charging cables.
You powered the device completely down, and left it off while leaving it plugged in, and it still didn't work? Hmmmm. Not sure what to tell you at this point. For me, that was the absolute worst case scenario, and doing the "unplug the cable from the charging adapter, and plugging it back in, while leaving the lightning end in" trick has been working for me.