Error 21 On Iphone
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Close × Menu Repair Guides Answers Forum Parts & Tools Store Teardowns Translate Join Log In GO iFixit Fast Order Create a Page Edit Billing Info Order History Logout Join Log In Repair Guides error 21 itunes Answers Forum Parts & Tools Store Teardowns Translate « Back to Answers iphone error 21 restore Index 81953 iPhone 4 Repair Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be iphone error 2001 replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. iphone 4 restore fail 3124 Questions View all Clew Rep: 781 2 https://drfone.wondershare.com/iphone-problems/iphone-error-21.html 2 1 Posted: 03/05/2012 Options Permalink History Subscribe Unsubscribe iPhone4 won't restore and shows Error 21 My phone won't turn on, but shows the Apple logo when I plug it in (either to the wall charger or the computer). Then, it goes to the Connect to iTunes screen and when I connect it to iTunes it tells me that I need to restore https://www.ifixit.com/Answers/View/81953/iPhone4+won't+restore+and+shows+Error+21 the phone. It will get all the way to "preparing iPhone for restore" then will say, "The iPhone could not be restored. An unknown error occurred (21)." I tried to disable my computer security, but it did the same thing. Does anyone know what else I could do to fix it? Please help! Answer this question I have this problem too Subscribed to new answers Is this a good question? Yes No Voted Undo Score 65 Cancel Comments: my iPhone does the same thing 12/27/2014 by imani I just had this error, I removed screen, changed battery for another one from a spare phone, connected old screen back on, and YES no more error 21, phone restored fine and working without problem. 01/06/2015 by jeffa ps old battery ribbon connection was damaged. 01/06/2015 by jeffa my phone restore, keep getting Error YES no more error 21, phone restored 04/22/2015 by Ankit Gupta i need help mine does the same thing and it gets me so frusturated ive tried everything to restore it but nothing. please help!!! 04/26/2015 by karisma alvarez bro,my phone does the same exsact thi
not post a blank message. Please type your message and try again. _Alama_ Level 1 (0 points) Q: Can "unknown error 21" be fixed ?? (iphone 4) Recently my iPhone 4 just reset itself out of nowhere and wouldn't turn back on. I placed it on a dock & the connect to https://discussions.apple.com/thread/5118033?tstart=0 itunes screen showed up. I plugged it into my computer and when it began to restore it stopped and the unknown error 21 window popped up. This has occured on 3 different computers & now I'm unsure how to handle this. -Please help. iPhone 4, iOS 6 Posted on Jun 20, 2013 1:54 PM I have this question too Close Q: Can "unknown error 21" be fixed ?? (iphone 4) All replies Helpful answers Page 1 Next by KiltedTim, KiltedTim Jun 20, error 21 2013 1:59 PM in response to _Alama_ Level 9 (56,126 points) Mac OS X Jun 20, 2013 1:59 PM in response to _Alama_ http://support.apple.com/kb/ts3694#error21Error 20, 21, 23, 26, 28, 29, 34, 36, 37, 40These errors typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, these errors may be a hardware issue. If the errors persist on another computer, the device may need service.Also, check your hosts file to verify error 21 on that it's not blocking iTunes from communicating with the update server. See iTunes: Advanced iTunes Store troubleshooting--follow steps under the heading Blocked by configuration (Mac OS X / Windows) > Rebuild network information > Mac OS X > The hosts file may also be blocking the iTunes Store. If you have software used to perform unauthorized modifications to the iOS device, uninstall this software prior to editing the hosts file to prevent that software from automatically modifying the hosts file again on restart. Helpful (0) Reply options Link to this post by simonege, simonege Sep 3, 2013 7:03 AM in response to _Alama_ Level 1 (0 points) Sep 3, 2013 7:03 AM in response to _Alama_ Did you solve it? I have the same problem with my ipad 2. Helpful (0) Reply options Link to this post by OnceUponAnAppleCare, OnceUponAnAppleCare Mar 17, 2014 1:32 PM in response to _Alama_ Level 1 (0 points) Mar 17, 2014 1:32 PM in response to _Alama_ Typically Yes That k-base document will resolve, OR at least help....This is how you see if it is your computer software causing the issue OR if it is the battery in your unit. attempt to restore the device, when you recieve error 21 (unable to restore "device" unknown error occured 21)make sure your device has been plugged in long enough to recieve some sort of charge. ( computer, dock, charger makes no difference) Unplug the unit..... Did it turn itself off and act l